武术表演者们5日晚在鸟巢外为奥运开幕式最后一次彩排预热。

Wushu practitioners warmed up outside the Bird's Nest Tuesday night during the final rehearsal for the Games opening.

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但是，或许最离奇的继承就业例子非佛罗伦萨莫属，在那里，乌菲齐画廊（Uffizi gallery）外为游客素描的法定权利也是世袭制的。

Perhaps the most bizarre example of inheritable employment surfaced in Florence, where the legal entitlement to sketch tourists outside the Uffizi gallery was also hereditary.

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打那以后，Walters从公众视野中全身而退了，他花很多时间在洛杉矶外的San Gabriel山脉远足，也为美国林务局做志愿者工作。

After that, Walters essentially withdrew from public life, spending a lot of time hiking in the San Gabriel Mountains outside Los Angeles and doing volunteer work for the U.S. Forest Service.

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It's good to have a vector pointing in the radial direction of length one.

所以引入这么一个模长为 1,方向沿圆心向外辐射的矢量作用很大

耶鲁公开课 - 基础物理课程节选

This equation is telling you if you compress it, namely if x is negative, F will be then positive, because it's pushing you outwards.

这个方程告诉我们,如果压缩弹簧,即令 x 为负,F 就为正,因为推力的方向向外

耶鲁公开课 - 基础物理课程节选

er is a vector at each point of length one pointing radially away from the center.

r 是一个模长恒为 1 的矢量,方向沿半径向外

耶鲁公开课 - 基础物理课程节选