The successful deployment and operation of the Japanese IKAROS and NASA's NanoSail-D solar sails have demonstrated a key method for getting around in space, without having to use any propellant.

日本的伊卡洛斯飞船和NASA的纳米帆-D太阳帆的成功发射和展开，已经展示了一个不用任何发动机就可以在太空中徘徊的关键方法。

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Sending synthetic X events to applications is the key method to enabling full control of D-Bus and non-API applications.

要实现对d - Bus和没有提供API的应用程序的完全控制，向应用程序发送合成的X事件是一种重要方法。

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D measurement of free surface, one of key technology of Reverse Engineering, is described in this paper.

本文研究了逆向工程的关键技术之一——自由曲面的三维测量技术。

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Because if you did what I suggested with the list, the time to look up the key would be linear in the length of the list. You'd have to look at each element until you found the key.

字典是用一种很神奇的，叫做散列法的算法,来实现的，后面我们将,会学到一点关于。

麻省理工公开课 - 计算机科学及编程导论课程节选

And they got in this habit of, every time they had a bright, happy text, they'd set this in one kind of mode or key-- a major mode--and every time they had a sad one, they'd set it in minor.

于是人们养成了这样的习惯,每当人们书写欢乐,愉悦的歌词时,他们就设定一个调式或调性,即大调,每当人们书写忧伤的歌词时,他们就定为小调

耶鲁公开课 - 聆听音乐课程节选

"The idea of working from 3-D information to 3-D construction is one of the key areas of research, working from body scan data and then linking that up to a knitting machine, " says Black.

CNN: From chemistry to catwalk

And of course vitamin D is key to building bone health and preventing osteoporosis.

FORBES: That Vitamin D You're Taking? It May Not Be What It Appears

Several years ago he read a paper in a scientific journal by a Japanese scientist who had discovered D-serine in key areas of the brain but didn't know why it was there.

FORBES: Repairing The Brain