使散开的某些东西，尤指地球表面的高地，水由该处向两个方向流动；分水岭。

Something that sheds, especially an elevation in the earth's surface from which water flows in two directions; a watershed.

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一滴奶在水中扩散开来，使水变得混浊不清了。

A drop of milk diffused in the water, and it became cloudy.

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她们在屋子里散开，动作轻盈活泼，使我联想起一群羽毛雪白的鸟儿。

They dispersed about the room, reminding me, by the lightness and buoyancy of their movements, of a flock of white plumy birds .

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