Under cloudless skies, the surface gives up its moisture, making the ground level hotter and drier while not increasing the chances of rain.

在万里无云的天空下，地表水分蒸发，使地表更热、更干燥而无法增加形成雨的机会。

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Pronation is the gentle roll of a foot inward after making contact and it is normal and necessary for a foot to evenly absorb the impact of striking the ground.

脚内翻是脚触地后的稍微内翻，以均匀吸收触地后的冲力，这是一个正常而必要的的动作。

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Gmail Labs is indeed a testing ground-while no experimental options have been cut or promoted into official features yet, Jackson said his team is planning on making some of those changes soon.

Gmail Labs确实是实验场——目前还没有实验性选项被去除或升级为官方功能，但Jackson的团队正计划于近期开始这么做。

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By making these differences concrete and conscious, they were able to have a constructive dialogue that led to ground rules for decision-making.

FORBES: Why You Need to Ask Questions About Your Culture

Yet though the frontiers of health-care policy have been extended, making Latin America a testing-ground for reform worldwide, not all the arguments have been settled.

ECONOMIST: The Americas shift toward private health care

So much for that trend -- for a few weeks there is looked like the HD DVD camp was making up lost ground on Blu-ray and even got within one percent of beating them.

ENGADGET: Nielsen VideoScan High-Def market share for week ending November 4th, 2007