From a biological point of view, there are certain differences in physiological functions of people in different natural environments, and the needs of the environment is different too.
从生物学的角度来讲，生活在不同自然环境下的人们在生理机能上是存在一定差异的，其环境需求也是不一样的。
From a biological point of view, there are certain differences in physiological functions of people in different natural environments, and the needs of the environment is different too.
从生物学的角度来讲，生活在不同自然环境下的人们在生理机能上是存在一定差异的，其环境需求也是不一样的。
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