跟讀練習: Does Aloe Really Treat a Sunburn? - 通過影片學習英語口語

選擇練習模式

每種模式都會開啟全屏練習室。

30 句

如果句子過短或過長，請點選 Edit 進行調整。

It’s advice as old as time: if you get a sunburn, start lathering on the Aloe Vera.

And when we say ‘old as time’, we mean it.

Humans have been using aloe vera medicinally for thousands of years.

But does the slimy gel actually have skin-healing properties?

Well, the research is surprisingly scarce, but it seems like it may help boost your skin’s natural healing process.

Sunburns themselves really aren’t all that different than burns from a campfire, a curling iron, or stepping on a George Foreman grill.

So studies looking at burn healing tend to lump them together.

And there is some evidence that applying the mucus innards from Aloe plants helps you heal faster after a burn.

A review from 2007 in the journal Burns found that in 127 burn victims, those who used aloe healed almost 9 days faster on average than those in control groups.

But what aloe actually does is a little less clear.

In general, there are three main concerns when treating burns: reducing pain, actually healing the wound, and preventing infection.

Aloe’s antibacterial and antifungal activities are well documented, so it might simply help because it keeps pesky microbes at bay.

But ask just about anyone who slathers on the aloe after a sunburn, and they’ll swear it’s an analgesic, meaning that it reduces pain.

And that might be because it reduces inflammation—your body’s immune response that makes things like sunburns all red and painful.

For example, an experiment in 1993 was able to isolate an enzyme in aloe that breaks down bradykinin, an inflammatory substance linked with pain.

But there’s not all that much clinical research on aloe pain-killing effects, so the jury is still out on whether they’re real, or it’s just acting as a placebo.

There’s a bit more evidence that it boosts skin healing.

Studies in rats have shown that aloe extract helps new skin cells move into burned areas, so they can rebuild the damaged tissue.

And the gooey gel in aloe vera contains a large amount of glucomannan, a fiber comprised mostly of the sugar mannose, which stimulates the production of fibroblastic growth factor.

It helps stimulate the formation of collagen and new blood vessels, which speed up how quickly the skin heals.

That said, human studies to date are kind of flimsy.

A 2012 Cochrane review noted that the few trials that have been conducted aren’t high quality—they’re all small, and their results are potentially biased by things the patients or caregivers knowing aloe was being used.

So, it might work, or it might just be that people think it’ll work.

And when it comes to your over the counter sunburn gel, it might not even be the aloe itself.

Researchers have found that it can speed up that absorption of vitamins and drugs through the skin.

So if your aloe gel also has things like Vitamin E, or some other anti-inflammatory drug, that substance gets into your skin faster.

But whether aloe works or not, I think we can all agree it’s just better to avoid needing it.

So if you’re going to spend some time in the sun this summer, maybe take steps to avoid overexposure instead of relying on aloe to soothe your beet-red skin afterwards.

Thanks to Joelle and Brianna Beecher for asking, and to all our patrons who voted for this question in our poll.

If you want to ask us questions like this and help decide which of them we answer, or just get a bunch of awesome rewards you can’t get anywhere else, you can head on over to Patreon.com/SciShow.

下載應用

流利口語所需的一切

AI 發音評分逐句打分

音標練習掌握每個音

詞彙學習建立你的詞庫

詞彙遊戲邊玩邊學

掃碼

Download on theApp Store Get it onGoogle Play

同頻道

FOR YOU

本課的詞彙與口語要點

這段影片共有 30 個句子、604 個單詞可供跟讀。講話部分時長為 3:21。說話人語速較快，每分鐘約 181 個詞，會出現較多連讀和弱讀。只有 77% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。

影片中的重點詞彙

影片中 15 個值得學習的單詞，附發音和釋義：

單詞	發音	釋義
heal 動詞	/ˈhiːl/	醫治 /醫治
substance 名詞	/ˈsʌbstəns/	物質 /物質
inflammatory 形容詞	/ɪnˈflæmət(ə)ɹi/	激發性 /激發性
stimulate 動詞	/ˈstɪm.jəˌleɪt/	刺激
afterwards 副詞	/ˈæf.tɚ.wɚdz/	然後 /然後
experiment 名詞	/ɪkˈspɛɹ.ə.mənt/	實驗 /實驗
poll 名詞	/poʊl/	投票, 選舉 /選舉
infection 名詞	/ɪnˈfɛkʃən/	傳染 /傳染
reward 名詞	/ɹɪˈwɔɹd/	報酬 /報酬, 獎勵 /獎勵
painful 形容詞	/ˈpeɪn.fl̩/	痛苦的, 疼痛的
tissue 名詞	/ˈtɪʃ.(j)u/	紙巾
rely 動詞	/ɹɪˈlaɪ/	依賴 /依賴, 依靠
vessel 名詞	/ˈvɛsəl/	船隻 /船隻, 船
bias 名詞	/ˈbaɪ.əs/	偏見 /偏見
rat 名詞	/ɹæt/	лочў, 鳥鼠 /鳥鼠

影片中出現的短語動詞

單詞	發音	釋義
speed up 動詞	/spiːdˈʌp/	加速, 加快
break down 動詞		壞了 /壞了, 出故障

需要注意的發音

說話人用了 8 次縮略和弱讀形式，例如 aren't, they're, can't。請按聽到的簡短形式來說。

“th” 音: lather /ˈlæð.ɚ/, slather /ˈslæðə(ɹ)/, soothe /suːð/
“sh” 和 “zh” 音: potentially /pəˈtɛnʃ(ə)li/, infection /ɪnˈfɛkʃən/, tissue /ˈtɪʃ.(j)u/, inflammation /ɪnfləˈmeɪ̯ʃən/, absorption /æbˈsɔɹp.ʃn̩/
長單詞——注意重音位置: inflammatory /ɪnˈflæmət(ə)ɹi/, potentially /pəˈtɛnʃ(ə)li/, experiment /ɪkˈspɛɹ.ə.mənt/, surprisingly /səˈpɹaɪzɪŋli/, inflammation /ɪnfləˈmeɪ̯ʃən/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
先用 0.75 倍速逐句跟讀，熟練之後再回到正常速度。
錄下自己的聲音並與原聲對比，特別注意 heal, substance, inflammatory 這類單詞。

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	have shown · have been conducted · have found
定語從句 who / which + 從句 — 補充說明人或事物	those who used · anyone who slathers

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: Does Aloe Really Treat a Sunburn? - 通過影片學習英語口語

選擇練習模式

下載應用

同頻道

What’s Ruining Our Ruins?

The Science Behind The Odyssey's Greatest Challenge

Do Penguins Control the Weather?

The Most Important Picture in the History of Science

Why Do We Sneeze?

Why Can’t We Have Unicorns?

What's Really Behind The Adderall Shortage?

Ticks Can Spread An Allergy To… Red Meat?

The ONE Disease That Smoking Can Help Treat

How Onions ACTUALLY Make You Cry (And How to Stop Them)

推薦影片

Coral Bleaching: A Marine Biologist Explains

what i eat for GUT HEALTH & CLEAR SKIN | anti-inflammatory, simple meals

Medical Memes Doctors Actually Like

Treating Acne Scars with CO2 Laser: What You Need to Know

The Craziest Ways Ancient Humans Made Fire #AncientHumans #History #Survival

Why Does Heartbreak Hurt So Much?

At a Pharmacy on Holiday: Sunburn and a Sore Throat

Tattoo Removal Is Insane

Does Being Cold Make You Sick?

Why Is My Butt So Itchy

THE ULTIMATE INJURY RECOVERY TIER LIST

$182 Skinceuticals vs. $16 e.l.f. Vitamin C Serum (is it a dupe??)