The video owner has disabled playback on external websites.
This video is no longer available on YouTube.
This video cannot be played right now.
Watch on YouTube
Biology | "What's In Our Digestive System?" Explained | Human Body | Science for Kids
学习统计
CEFR 等级
难度
字幕 (107 片段)
how is poop made
let's check out michael's digestive
system and see what's wrong first off
the mouth
ah
all this chewing is making me dizzy
chewing is a very important step in food
digestion bobo look at how michael's
teeth are crushing the biscuit and it is
much smaller than it was
after the food is broken down into
smaller pieces
the ball of food can easily travel down
the esophagus to our stomach
this first step of food processing which
we swallow food and drinks is called
ingestion
the transparent liquid is called saliva
it helps wet our food so that it's
easier to swallow we are going to be
traveling down the esophagus and get
into the stomach hang on tight whoa
完整字幕可在视频播放器中查看
评论 (0)
登录后评论互动模式
测验
正确答案：
相关视频
Solar System 101 | National Geographic
How To Read, Understand and Summarise Legal Cases Quickly
‘Kingsman: The Secret Service’ Movie | Anatomy of a Scene | The New York Times
What polls can actually tell us
Dorothy’s Most Sarcastic Moments (Part 2) | The Golden Girls
Big Bang Academy Kids
测验
正确答案：
观看视频时会出现测验
记忆技巧
来自此视频
免费开始学语言
