The water in it is just right at the level of the Gaiwan's mouth, with a simple drop on the desk,

里面的水正好和盖碗的嘴一样高，只有一两滴落在在桌子上。

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Some time in the coming decades, the shrinking of glaciers will cause a drop in the level of glacial runoff, reducing the supply of water to urban Chileans.

在未来几十年里的某个时候，冰山的消融会减少冰山径流，从而减少对智利城市居民的用水供应。

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By 1950, though, human activities had started to make an impact. Then, the water level began to drop at a rate of 30 centimeters (about a foot) each year.

到1950年，人类活动开始产生深远影响。那时，水平面开始以每年30厘米的速度下降。

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Chandler said the U.S. Army Corps of Engineers had adjusted a nearby dam to drop the river's water level by 2 feet and was regulating the current to make it easier on the divers, whom Chandler directs.

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The Xperia acro S has the highest level of water resistance of any smartphone, so you can drop it in your drink, then shake it off and carry on.

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Nadel points to Ohalo, a site he excavated near the Sea of Galilee that had been submerged for 20, 000 years before a drop in water level made it easy to excavate.

CNN: Mysterious structure found at bottom of ancient lake