Since cold air sinks, and these spots are shaded, they are usually much cooler than the surrounding area.
由于冷空气下沉，这些斑点被遮蔽，它们通常比周围的地区要冷得多。
The waters do no mix (the cold water sinks under the warmer water) and the fauna of either sides of the Convergence is quite different.
这两种水不会混合(冷水将沉在温水下面)，“汇聚带”两侧的动物物种有很大区别。
The third wind belt develops as cold polar air sinks and moves south, is deflected to the right, and is therefore called the polar easterlies.
当冷的极地的空气下沉并且移动南方，受科氏力影响偏向右边，因此被称为极地东风带。
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