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其实你每天要分泌4-8杯唾液,这有什么用? – 译学馆
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其实你每天要分泌4-8杯唾液,这有什么用?

Why Do We Have Saliva?

可能我们都没怎么注意过唾液
We might not think about it a lot,
但是 我们的嘴巴里真的
but the insides of our mouths are really wet
总是湿乎乎的
all the time.
那里面有好多口水!
There’s a ton of spit in there!
啊 吱吱 别舔我!
Aaa, Squeaks, don’t lick me!
我们的嘴里总会有一些口水 或者说唾液
There’s always some spit, or saliva, in our mouths
因为唾液真的有非常重要的作用
because it has some really important jobs,
比如说 帮助我们说话 品尝味道
like helping us talk and taste.
还有助于分解食物呢!
It even helps break down our food!
唾液由我们体内一些叫做唾液腺的
Saliva comes from special parts of your body
特殊部位所分泌
called salivary glands.
这些腺体看起来一小团一小团的
They look kinda like little blobs,
你体内有6个唾液腺:舌头下有两个
and you have six of them: two under your tongue,
下颌后侧下方有两个
two by the back of your jaw under your chin,
耳朵下还有两个
and two under your ears.
唾液腺会一直分泌口水
Our salivary glands arealways making more spit.
因为大部分唾液都被咽了
We might not even realize how much
所以我们可能都不知道自己分泌了多少
since we swallow most of it,
但是 唾液腺每天分泌的唾液有4~8杯呢!
but they make 4-8 cups of saliva every day!
那看起来可能就不少了
That might seem like a /ton/ of spit,
我们有这么多唾液是有好处的
but it’s a good thing we have it.
唾液中大部分是水
Saliva is mostly made of water,
唾液通过保持口腔湿润
and by keeping our mouths wet,
使舌头和嘴唇在我们说话时能充分活动
it helps us move our tongues and lips around when we talk.
唾液在我们吃东西时也超级管用的
Saliva is also super helpful for eating.
它使食物在你嘴里变得适口而湿润
It makes the food in your mouth nice and wet,
在你咀嚼和吞咽时
which makes it much easier to move around
更容易转移
as you chew and swallow.
同时 唾液还让你的食物口感更好
And at the same time, it makes your food taste better!
使食物具有不同味道的东西
The things that give your food its taste,
如盐和糖 必须融化
like salt and sugar, have to dissolve,
或溶于水中 才能让舌头上的味蕾
or get into water, for the taste buds
尝出它们的味道
on your tongue to be able to taste them.
没有唾液的话 即使是一块小甜饼
Without saliva, even a cookie would just
在你口中也只能像一堆又干又糟 没有味道的东西
feel like a bunch of dry crumblytasteless stuff in your mouth!
[吱吱声]
[Squeaks squeaks]
我也因为我们有唾液而高兴!
I’m glad we have saliva, too!
但是 除了对我们说话和产生味觉有帮助 唾液还有更重要的作用呢
But it does even more than help us talk and taste things.
在我们将食物咽到胃里之前
It also helps us digest,
它还能帮我们消化或分解
or break down, some of our food
其中一些食物
before it even gets to our stomachs.
尽管唾液中大部分是水
Even though most of saliva is water,
它也含有少量的其他物质
there ’ s also small amounts of other stuff in it,
酶就是其中的一种
including something called an enzyme.
酶是十分微小的颗粒 用肉眼是看不见的
Enzymes are tiny little particles, way too small for us to see.
而我们身体的其他许多部位也有酶
But they’re in lots of different parts of our bodies.
酶的作用之一就是帮助我们将食物分解成
And one thing enzymes do is help break down our food
更小 结构更简单的物质
into smaller and simpler pieces
使它们更易于被我们的身体
that are easier for our bodies
吸收并利用其中的能量
to absorb and use as energy.
这种唾液酶
The type of enzyme in saliva
用于分解
is in charge of breaking down foods
面包 谷物或薯类这样的食物
like bread, cereal, or potatoes.
只要你将食物吃到嘴里
As soon as you put the food in your mouth,
唾液就会发挥分解作用
your saliva gets to work breaking it down!
这样 在你咽下食物之前
That way it gets a head start on digesting it
唾液就已经开始对它们进行消化了
before you even swallow.
所以 唾液除了能帮助我们说话 品尝味道
So besides helping us talk and taste,
还能帮我们从食物中获得能量呢!
saliva also helps us get energy from our food!
而这些仅仅是唾液的一部分功能
And those are just some of its jobs.
唾液是超有用的!
Spit is super useful!
[吱吱声]
[Squeaks squeaks]
我知道 老是说食物食物的
I know, all this talk about food
让我也开始觉得饿了
is starting to make me hungry, too!
这太正常了 因为午餐时间就快到了
Which is perfect, because it’s almost time for lunch.
我们去用一用唾液吧!
Let’s go use some of that saliva!
感谢你收看我们的节目!
Thanks for joining us!
如果你想跟着我和吱吱
If you want to keep learning and
继续学习 玩耍的话
having fun with Squeaks and me,
点击订阅按钮
hit the subscribe button,
我们下次就会在城堡里再见面了!
and we’ll see you next time here at the Fort!

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视频概述

我们没有唾液行不行?本视频介绍了我们口中唾液的来源和作用。

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视频来源

https://www.youtube.com/watch?v=SZYA9cQpSCU

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