Earthquake tsunami is the result of interaction between the solid layer and the fluid layer of Earth's surface.

地震海啸的产生是地球表面固体层和流体层相互作用的结果。

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As a result of fluvial scouring and aggrading the riverbed, the alluvial layer is fluid-saturated porous medium.

由于河流冲刷和河床加积，沉积层多饱和多孔。

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This layer is part of the barrier to evaporation, and its absence means our lip skin retains less fluid.

第一，我们身体其他部位的肌肤有一层“保护层”，这是嘴唇所没有的。 “保护层”能有效保湿，嘴唇因为没有而不易保湿。

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First, the team measured the thickness of the fluid layer between the toe pad and the Petri dish that the frog was standing on.

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When pressurized water is fed over such an intersection, the pressure pushes down the thin layer of rubber, separating it from the fluid below, and it clamps shut the fluid channel below, like stepping on a hose.

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