Is it safe to swallow your gum?
本文作者： 21st
IT is an old story that scares (惊吓) young children – it says that if you swallow (吞下) a piece of chewing gum (口香糖), it will take seven years for your body to fully digest (消化) it. An even more terrifying tale says that the gum you swallow can stick itself to your stomach forever. |  |
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