تدريب Shadowing: Power – Rate of Work - تعلم التحدث بالإنجليزية عبر الفيديو

اختر وضع التدريب

كل وضع يفتح غرفة تدريب بملء الشاشة.

43 جمل
إذا كانت الجمل قصيرة أو طويلة جدًا، انقر على Edit لتعديلها.
1
Ever walked up a flight of stairs and wondered why running up feels so much harder?
2
Think about what it takes to get up stairs.
3
With every step, your muscles lift your body against gravity.
4
If you ran up instead, you'd still have to lift your weight through the same height.
5
That's where power comes in.
6
Power tells us how quickly work is done.
7
To find average power, divide the work by the time it takes.
8
Work is measured in years, time in seconds, and power in watts.
9
So, if you see a power rating of one watt, that means one gear of energy is transferred every second.
10
Let's put some numbers to that.
11
Imagine a climb that takes 1 ,200 years of work against gravity.
12
If you take 12 seconds, your average power is 100 watts.
13
What if you do that same climb in 6 seconds?
14
Now you're doing 200 years of work each second.
15
Half the time, twice the power.
16
Imagine taking a ride in a sports car.
17
The driver presses the accelerator and you feel yourself pressed back into the seat as the car picks up seats.
18
The car is gaining kinetic energy.
19
How quickly can its engine supply energy?
20
Take a 400 kilowatt engine.
21
At full power, it can deliver 400 ,000 joules of mechanical energy every second.
22
Now picture a standard halfback on an everyday drive.
23
It can reach motorway speed, too.
24
Suppose this engine is rated at 60 kW.
25
At full power, that's 60 ,000 wheels every second.
26
If the two cars have similar mass, they need roughly the same gain in kinetic energy to go from rest to motorway speed.
27
With similar grip and losses, the more powerful car can get there seen.
28
Now let's look at the world's fastest landowner, the Cheetah.
29
Imagine how quickly it has to gather speed when it chases its head.
30
In just a quick drive, its muscles give its body a big increase in kinetic energy.
31
That's a burst of high power.
32
Compare that with a hard -working husky.
33
Picture it pulling a light sled along a snowy trail.
34
Once the sled is gliding at a steady speed, is the husky still doing work?
35
It is.
36
The snow resists the sled's motion, so the husky has to keep pulling.
37
Its talent is disdaining that effort over a long distance.
38
Next time you head upstairs, Think about two questions.
39
How much work does it take to lift you to the top?
40
And how quickly do you do it?
41
The first tells you about the energy changes.
42
Put that together with the time taken and you have your average path.
43
Thank you.

تنزيل التطبيق

كل ما تحتاجه للتحدث بطلاقة

تقييم النطق بالذكاء الاصطناعيتقييم كل جملة
تدريب IPAأتقن كل صوت
المفرداتابنِ رصيدك من الكلمات
لعبة المفرداتتعلّم أثناء اللعب
امسح رمز QR
امسح رمز QR
Download on theApp StoreGet it onGoogle Play

نفس القناة

Simple Machines – GearsB2
6

Simple Machines – Gears

Daily ConversationUniversity Students
Color in Nature – Quiz EditionC1
1

Color in Nature – Quiz Edition

Daily ConversationUniversity Students
Exploring the pH ScaleB2
3

Exploring the pH Scale

Daily ConversationHigh School Students
All About JellyfishB2
3

All About Jellyfish

Daily ConversationUniversity Students
Ferns Grew Up. Why Couldn’t They Move On?C1
1

Ferns Grew Up. Why Couldn’t They Move On?

Daily ConversationHigh School Students
Water Pollution and How We Can Reduce It!B1
8

Water Pollution and How We Can Reduce It!

TeensDaily Conversation
Bulbs Arranged in Parallel – Brightness of BulbsB1
2

Bulbs Arranged in Parallel – Brightness of Bulbs

Daily ConversationHigh School Students
Characteristics of OrganismsB1
2

Characteristics of Organisms

KidsDaily Conversation
Heat Transfer – Convection #shorts #ngscienceB1
4

Heat Transfer – Convection #shorts #ngscience

TeensDaily Conversation
Separating Solutions – DistillationB1
2

Separating Solutions – Distillation

Daily ConversationHigh School Students
Heat Transfer – In a MinuteB1
2

Heat Transfer – In a Minute

Daily ConversationHigh School Students
Responses to StimuliB2
2

Responses to Stimuli

Daily ConversationHigh School Students
Movements of the MoonA2

Movements of the Moon

KidsDaily Conversation
The Land Down Under – A Virtual Field Trip (Quiz Edition)B2
2

The Land Down Under – A Virtual Field Trip (Quiz Edition)

Daily ConversationHigh School Students
Types of SoilB1
6

Types of Soil

KidsDaily Conversation
Galápagos Islands – Virtual Field Trip 2B2
1

Galápagos Islands – Virtual Field Trip 2

Daily ConversationHigh School Students
Your Skeletal SystemB1
6

Your Skeletal System

KidsDaily Conversation
Space Exploration – Beyond Our PlanetB2
3

Space Exploration – Beyond Our Planet

Daily ConversationHigh School Students
The World of Waterfowl – Duck, Swans and GeeseB1
1

The World of Waterfowl – Duck, Swans and Geese

Daily ConversationWorking Adults
Metamorphosis – The Journey of ChangeB1
5

Metamorphosis – The Journey of Change

Daily ConversationHigh School Students
FOR YOU

فيديو موصى به

How a Car Engine WorksC1
1
67 جمل

How a Car Engine Works

Daily ConversationUniversity Students
Exercise Scientist Critiques The Real AnatolyC1
1
278 جمل

Exercise Scientist Critiques The Real Anatoly

Daily ConversationUniversity StudentsWorking Adults
RE3 Unit 7AB2
7
61 جمل

RE3 Unit 7A

Daily ConversationUniversity Students
GCSE Physics - Energy Stores, Transferring Energy & Work DoneC1
50 جمل

GCSE Physics - Energy Stores, Transferring Energy & Work Done

Daily ConversationUniversity Students
20% Speed of Light!! NEW Light Engine is INSANE!C1
2
224 جمل

20% Speed of Light!! NEW Light Engine is INSANE!

Daily ConversationUniversity StudentsWorking Adults
Steam Turbine Construction Operating FundamentalsC1
1
507 جمل

Steam Turbine Construction Operating Fundamentals

Daily ConversationUniversity Students
Every Processing Unit Explained in 20 MinutesC1
1
234 جمل

Every Processing Unit Explained in 20 Minutes

Daily ConversationUniversity Students
How to Work SMARTER Not HARDER in 2 MinutesB2
63
34 جمل

How to Work SMARTER Not HARDER in 2 Minutes

Daily ConversationUniversity Students
Creatine: is there truth behind the hype?C1
2
189 جمل

Creatine: is there truth behind the hype?

Daily ConversationUniversity StudentsWorking Adults
Robert Greene: Why Nice People Lose Power & How To Fix ItC1
3
646 جمل

Robert Greene: Why Nice People Lose Power & How To Fix It

American AccentDaily ConversationUniversity StudentsWorking Adults
Derivatives: Crash Course Physics #2C1
2
138 جمل

Derivatives: Crash Course Physics #2

Daily ConversationUniversity Students

المفردات وملاحظات التحدث لهذا الدرس

هذا الدرس في المحادثة مبني على الفيديو “Power – Rate of Work”. أكثر الكلمات تكرارًا في الفيديو: energy, speed, quickly, husky, kinetic. يحتوي هذا الفيديو على 43 جملة و431 كلمة للتدرب على الترديد. مدة الكلام 3:26. يتكلم المتحدث بسرعة ثابتة، نحو 126 كلمة في الدقيقة، وهي سرعة مريحة للترديد. 83% من الكلمات ضمن أكثر 3,000 كلمة شيوعًا في الإنجليزية، ويُستحسن مراجعة الباقي قبل البدء.

أهم المفردات في هذا الفيديو

15 كلمة من الفيديو تستحق التعلّم، مع النطق والمعنى:

الكلمةالنطقالمعنى
watt اسم/wɑt/وَاط
muscle اسم/ˈmʌs.əl/عَضَلَة
climb فعل/ˈklaɪ̯m/تَسَلَّقَ
rat اسم/ɹæt/جُرَذ, فَأْر
stairs اسم/ˈstɛɹz/سَلَالِم
compare فعل/kəmˈpɛɚ/قَارَنَ
trail اسم/tɹeɪl/أَثَر
chase فعل/t͡ʃeɪs/طَارَدَ
mechanical صفة/məˈkænəkəl/مِيكَانِيكِيّ
steady صفة/ˈstɪdi/ثابت
resist فعل/ɹɪˈzɪst/قَاوَمَ
divide فعل/dɪˈvaɪd/قَسَّمَ
grip اسم/ˈɡɹɪp/مَقْبِض
kinetic صفة/kɪˈnɛtɪk/حَرَكِيّ
motorway اسم/ˈməʊtəweɪ/أُوتُوسْتْرَاد, طَرِيق سَرِيع

الأفعال المركبة التي ستسمعها

الكلمةالمعنى
get up فعلقَامَ, نَهَضَ
pick up فعلقَطَفَ

نطق يحتاج إلى انتباه

  • الكلمات الطويلة — انتبه لموضع النبر: mechanical /məˈkænəkəl/, accelerator /əkˈsɛl.əˌɹeɪ.tɚ/

أصوات يجدها متحدثو العربية صعبة:

  • /p/ — ليس /b/: انطقه مع نفخة هواء: compare /kəmˈpɛɚ/, grip /ˈɡɹɪp/, upstairs /ˌʌpˈstɛɹz/
  • /v/ — ليس /f/: مع اهتزاز الأوتار الصوتية: gravity /ˈɡɹævɪti/, everyday /ˈɛvɹiˌdeɪ/, divide /dɪˈvaɪd/
  • تتابع الصوامت — لا تضف حركة بينها: climb /ˈklaɪ̯m/, gravity /ˈɡɹævɪti/, stairs /ˈstɛɹz/, trail /tɹeɪl/, steady /ˈstɪdi/

كيف تتدرب بهذا الفيديو

  1. استمع إلى الفيديو كاملًا مرة واحدة دون أن تتكلم، ودوّن الكلمات التي لا تعرفها.
  2. ردّد جملة جملة بالسرعة العادية، وكرّر كل جملة حتى يتطابق إيقاعك مع المتحدث.
  3. سجّل صوتك وقارنه بالأصل، مع الانتباه إلى كلمات مثل watt, muscle, climb.

ما هي تقنية التظليل الصوتي؟

التظليل الصوتي (Shadowing) تقنية تعلم لغة مدعومة علمياً، طُورت أصلاً لتدريب المترجمين الفوريين المحترفين. الطريقة بسيطة لكنها قوية: تستمع لصوت إنجليزي أصلي وتكرره فوراً بصوت عالٍ — كظل يتبع المتحدث بتأخير 1-2 ثانية. تُظهر الأبحاث تحسناً كبيراً في دقة النطق والتنغيم والإيقاع وربط الأصوات والاستماع والطلاقة.

تقنية الشادوينغ: اقرأ الدليل الكامل خطوة بخطوة →