跟读练习: Fertilization - 通过视频学习英语口语

正在创建课程...
1
Fertilization is the epic story of a single sperm facing incredible odds to unite with an egg
2
and form a new human life.
3
It is the story of all of us.
4
During sexual intercourse, about 300 million sperm enter the vagina.
5
Soon afterward, millions of them will either flow out of the vagina or die in its acidic environment.
6
However, many survive because of the protective elements provided in the fluid surrounding them.
7
Next, the sperm must pass through the cervix, an opening into the uterus.
8
Usually, it remains tightly closed, but here the cervix is open for a few days while the woman ovulates.
9
The sperm swim through the cervical mucus, which is thinned to a more watery consistency for easier passage.
10
Once inside the cervix, the sperm continue swimming toward the uterus, though millions will die trying to make it through the mucus.
11
Some sperm remain behind, caught in the folds of the cervix, but they may later continue the journey as a backup to the first group.
12
Inside the uterus, muscular uterine contractions assist the sperm on their journey toward the egg.
13
However, resident cells from the woman's immune system, mistaking the sperm for foreign invaders, destroy thousands more.
14
Next, half the sperm head for the empty fallopian tube, while the other half swim toward the the tube containing the unfertilized egg.
15
Now, only a few thousand remain.
16
Inside the fallopian tube, tiny cilia push the egg toward the uterus.
17
To continue, the sperm must surge against this motion to reach the egg.
18
Some sperm get trapped in the cilia and die.
19
During this part of the journey, chemicals in the reproductive tract cause the membranes covering the heads of the sperm to change.
20
As a result, the sperm become hyperactive, swimming harder and faster toward their destination.
21
At long last, the sperm reach the egg.
22
Only a few dozen of the original 300 million sperm remain.
23
The egg is covered with a layer of cells called the corona radiata.
24
The sperm must push through this layer to reach the outer layer of the egg, the zona pellucida.
25
When sperm reach the zona pellucida, they attach to specialized sperm receptors on the surface,
26
which triggers their acrosomes to release digestive enzymes,
27
enabling the sperm to burrow into the layer.
28
Inside the zona pellucida is a narrow fluid-filled space just outside the egg cell membrane.
29
The first sperm to make contact will fertilize the egg.
30
After a perilous journey and against incredible odds, a single sperm attaches to the egg cell membrane.
31
Within a few minutes, their outer membranes fuse and the egg pulls the sperm inside.
32
This event causes changes in the egg membrane that prevent other sperm from attaching to it.
33
Next, the egg releases chemicals that push other sperm away from the egg and create an impenetrable fertilization membrane.
34
As the reaction spreads outward, the zona pellucida hardens, trapping any sperm unlucky enough to be caught inside.
35
Outside the egg, sperm are no longer able to attach to the zona pellucida.
36
Meanwhile, inside the egg, the tightly packed male genetic material spreads out.
37
A new membrane forms around the genetic material, creating the male pronucleus.
38
Inside, the genetic material reforms into 23 chromosomes.
39
The female genetic material, awakened by the fusion of the sperm with the egg, finishes dividing, resulting in the female pronucleus,
40
which also contains 23 chromosomes.
41
As the male and female pronuclei form, spiderweb-like threads, called microtubules, pull them toward each other.
42
The two sets of chromosomes join together, completing the process of fertilization.
43
At this moment, a unique genetic code arises, instantly determining gender, hair color, eye color, and hundreds of other characteristics.
44
This new single cell, the zygote, is the beginning of a new human being.
45
And now the cilia and the fallopian tube gently sweep the zygote toward the uterus, where he or she will implant in the rich uterine lining,
46
growing and maturing for the next nine months until ready for birth.
📺 同频道
Stem CellsC1
1

Stem Cells

IELTS PrepTOEFL PrepUniversity Students
Biology: Cell Structure I Nucleus Medical MediaC1
2

Biology: Cell Structure I Nucleus Medical Media

University Students
Transcatheter Aortic Valve Implantation (TAVI)C1

Transcatheter Aortic Valve Implantation (TAVI)

University StudentsWorking Adults
A1C Test for Measuring Blood Sugar LevelsC1

A1C Test for Measuring Blood Sugar Levels

Daily ConversationUniversity StudentsWorking Adults
✨ 推荐视频
Mosquito Life Cycle and Disease PreventionC1
4
44 句

Mosquito Life Cycle and Disease Prevention

IELTS PrepTOEFL PrepUniversity Students
The Most Overlooked Qur'anic Verse About Human Origins!C1
1
135 句

The Most Overlooked Qur'anic Verse About Human Origins!

IELTS PrepTOEFL PrepUniversity Students
Oxytocin: The Love Hormone (#short)B2
1
7 句

Oxytocin: The Love Hormone (#short)

University StudentsWorking Adults
Hope for the White Rhino: Scientists Create 38 Embryos in Conservation Breakthrough | 4K | N18GB2
1
55 句

Hope for the White Rhino: Scientists Create 38 Embryos in Conservation Breakthrough | 4K | N18G

IELTS PrepTOEFL PrepUniversity Students
Let’s Tie All Planets TogetherC1
14
12 句

Let’s Tie All Planets Together

University StudentsWorking Adults
Ferns Grew Up. Why Couldn’t They Move On?C1
1
20 句

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

TOEFL PrepCambridge Exam PrepUniversity Students
Human Anatomy EyeC1
3
52 句

Human Anatomy Eye

IELTS PrepTOEFL PrepUniversity Students
4 How to use PCR and qPCRC1
1
239 句

4 How to use PCR and qPCR

Business EnglishUniversity StudentsWorking Adults
tagesschau 20:00 Uhr, 21.07.2026B2
1
197 句

tagesschau 20:00 Uhr, 21.07.2026

Daily ConversationUniversity StudentsWorking Adults
What If You Were Swallowed ALIVE by a 60-Foot Sperm Whale?B2
2
43 句

What If You Were Swallowed ALIVE by a 60-Foot Sperm Whale?

Daily ConversationUniversity StudentsWorking Adults
What Is Life? Is Death Real?C1
3
72 句

What Is Life? Is Death Real?

University StudentsWorking Adults

本课的词汇与口语要点

这节 C1 级别的口语课以视频“Fertilization”为素材。 视频中反复出现的词有：sperm, egg, inside, membrane, toward。 这段视频共有 46 个句子、662 个单词可供跟读。 讲话部分时长为 5:23。 说话人语速平稳，每分钟约 123 个词，很适合跟读。 只有 67% 的单词属于英语最常用的 3,000 词，词汇难度较高。

视频中的重点词汇

视频中最难的 15 个单词，附发音和释义：

单词发音释义
membrane 名词/ˈmɛm.bɹeɪn/薄膜
cervix 名词/ˈsɝ.vɪks/子宮頸 /子宫颈
attach 动词/əˈtæt͡ʃ/附上, 附
chromosome 名词/ˈkɹoʊməˌsoʊm/染色體 /染色体
cilium 名词/ˈsɪl.i.əm/纖毛 /纤毛, 纤毛
mucus 名词/ˈmjuːkəs/黏液
uterine 形容词/ˈjutəɹaɪn/子宮 /子宫
zygote 名词/ˈzaɪˌɡoʊt/合子, 受精卵
vagina 名词/vəˈdʒaɪ.nə/陰道 /阴道
acrosome 名词頂體 /顶体
awaken 动词/əˈweɪkən/喚醒 /唤醒, 叫醒
burrow 名词/ˈbʌɹoʊ/地洞
contraction 名词/kənˈtɹækʃ(ə)n/收縮 /收缩
impenetrable 形容词/ɪmˈpɛnətɹəbəl/不能通过的, 不能渗透的
invader 名词/ɪnˈveɪ.də(ɹ)/侵略者, 侵入者

需要注意的发音

  • “sh” 和 “zh” 音: contraction /kənˈtɹækʃ(ə)n/, specialize /ˈspɛʃəˌlaɪz/, fusion /ˈfjuː.ʒən/
  • 长单词——注意重音位置: hyperactive /ˌhaɪpəɹˈæk.tɪv/, impenetrable /ɪmˈpɛnətɹəbəl/, reproductive /ˌɹiːpɹəˈdʌktɪv/, characteristic /ˌkæɹ(ə)ktəˈɹɪstɪk/, consistency /kənˈsɪs.tən.si/

中文母语者容易读错的音：

  • /v/ — 不要读成 /w/，上齿轻触下唇: cervix /ˈsɝ.vɪks/, vagina /vəˈdʒaɪ.nə/, digestive /daɪˈdʒɛstɪv/, hyperactive /ˌhaɪpəɹˈæk.tɪv/, invader /ɪnˈveɪ.də(ɹ)/
  • 词尾辅音 — 要读清楚，后面不要加元音: uterus /ˈjuː.tə.ɹəs/, cervix /ˈsɝ.vɪks/, attach /əˈtæt͡ʃ/, mucus /ˈmjuːkəs/, zygote /ˈzaɪˌɡoʊt/
  • /r/ 和 /l/ 的区别: fertilize /ˈfɜː(ɹ)tɪlaɪz/, impenetrable /ɪmˈpɛnətɹəbəl/, perilous /ˈpɛɹ.ɪ.ləs/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
  3. 录下自己的声音并与原声对比，特别注意 membrane, cervix, attach 这类单词。

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →