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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Up close the cow appears to be stretched from head to toe, but when viewed from the ground the cow regains normal proportions.

从上方靠近母牛看可以发现它的形象从头到脚被纵向拉长，但从地面往上看母牛却还是正常的比例大小。

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The aim of both teams is to tap into high-altitude wind, which is an energy source that is more abundant and reliable than the ground-level wind on which normal turbines depend.

两个研究小组的目的是一致的：利用更加丰富、稳定的高海拔风能发电，而普通的涡轮发电机则依赖于地表风能。

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Lower temperatures help prevent the degradation of the media that leads to normal data loss so some in the discussion pointed out that burying the devices in the ground could extend their useful life.

FORBES: Will You Remember Me When I am Gone: The Persistent Danger of Data Loss

"They will go beyond the normal ban on air travel within a three nautical-mile radius.. and up to 3, 000 feet above ground, " Shumann said.

CNN: FAA issues flight restrictions