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SCIENCE STUDY

FAST FACTS

作者:TEENS
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QIANTU

Unable to throw up

马不会呕吐。

Not every animal can vomit (呕吐). Horses, for example, cannot do so. They have much stronger lower muscles in their esophagus (食道) than other animals. This makes it impossible for the throat to open under backward pressure from the stomach. TEENS

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