condense

Water vapour condenses to form clouds.

水蒸汽冷凝形成云。

In fact, only a tiny percentage of freshwater is part of the water cycle, in which water evaporates and rises into the atmosphere, then condenses and falls back to Earth as precipitation (rain or snow).

事实上，只有很小一部分淡水是水循环的一部分，在这个循环中，水蒸发并上升到大气中，然后冷凝并以降水（雨或雪）的形式落回地球。

When you summarize, you condense an extended idea or argument into a sentence or more in your own words.

总结的时候，用自己的话把拓展了的观念或论据简缩成一句或几句话。

Condense the soup by boiling it for several minutes.

煮几分钟把汤熬浓。