For example, if an open test tube with some water in the bottom is placed in a room in which the air is relatively dry, water vapor will diffuse out through the column of air in the test tube.

例如，当一支底部有水的开口试管被放置在一间空气相对干燥的房间里，水蒸气就会通过试管中的空气柱散布出来。

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They are diffuse,dispersed,spread out instead of concentrated the way that fossil energy was.

VOA: standard.2010.04.21

So depending on the relative humidity and temperature, 100 or more water molecules diffuse out of the leaf for every molecule of carbon dioxide that diffuses in.

WSJ: Harrison H. Schmitt and William Happer: In Defense of Carbon Dioxide

"It's harder to tease data out of team sports, because the action is so diffuse, " said Mark Broadie, a finance professor at Columbia Business School.

WSJ: Why Scientists Love to Study Golf

Rather than phrase this negatively, however, I want to try to identify the potentially explosive issues, land mines if you will, that Facebook will encounter in its path to build out its third pillar and suggest what it needs to do to avoid or diffuse them.

FORBES: Facebook Graph Search Is A Disruptive Minefield Of Unintended Consequences