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When you feel tensed, there is an increased demand of oxygen for your brain.
当你感到紧张时，大脑的需氧量增加。
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The oxygen demand is usually measured for Marine biological experiments.
在海洋生物实验中，常常需要测量生物的需要氧量。
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The oxygen demand is usually measured for Marine biological experiments.
在海洋生物实验中，常常需要测量生物的需要氧量。
youdao