若你过度劳累和难以入眠，这将影响到肠胃的正常“运作”，或产生便秘的情况。

So, if you are overtired and cannot sleep then you could get stressed in which case there is a good chance that your bowel will not be working efficiently and you may become constipated.

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我不知道美国农业部曾经有一位研究肠胃胀气的专家。

I didn't know the U.S. Department of Agriculture once had a flatus researcher.

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非反刍动物并不能从植物的坚硬部分汲取太多能量；但是它们的肠胃能够快速地消化并且处理食物，从而大大地弥补了这方面的不足。

Nonruminants cannot extract much energy from the hard parts of a plant; however, this is more than made up for by the fast speed at which food passes through their guts.

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