One eof the main effects of human activity on an area is water pollution.
人类活动对一个地区的主要影响之一是水污染。
Diving is the activity of jumping into water with your head and arms first.
跳水运动是在人跳入水中时，头和手臂先入水的运动。
This paper introduced definition, measurement, application and study status quo of water activity.
本文介绍了水分活性的定义并对其检测方法、作用及研究现状进行综述。
This paper introduced definition, measurement, application and study status quo of water activity.
本文介绍了水分活性的定义并对其检测方法、作用及研究现状进行综述。
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