事实上，很容易把这种微弱的胎动误以为是胃内气体或肚子的咕噜声。

In fact, it's easy to mistake the faint flutters for gas or stomach rumbling.

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太空中没有多少重力能把这液体留在你的胃里，但你仍需要把在肚子里膨胀的二氧化碳排出体外。

There's little gravity to keep the fluid in your stomach, but you still need to vent that carbon dioxide that is expanding inside your belly.

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这样可以帮助胃蠕动以便把肚子里的食物消化干净。

This will help to gastric peristalsis of the stomach to digest food clean.

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