A radar gun timed the speed of the baseball.

一支雷达枪测出了棒球的速度。

《柯林斯英汉双解大词典》

Each paratrooper must correctly leave the platform of the simulator, gain speed, take out a gun and get ready for shooting.

每位伞兵必须正确得脱离模拟装置台，加速、取出枪，准备好射击。

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Anolog speed signal VEL from SDC is also taken as speed feedback signal to form speed loop in gun servo system.

SDC输出的模拟速度信号VEL还可以作为速度反馈信号以构成火炮伺服系统中的速度回路。

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In May 2008 he and a cousin engaged in a high-speed gun battle with a rival along South Claiborne Avenue, one of the city's busiest streets, then rammed the man with their silver Mustang as he fled, in terror, on foot.

ECONOMIST: A murderer sows terror, even from jail

But the new measures drew ire from the nation's largest gun lobby over the speed with which the bill was passed in the new legislative session.

CNN: STORY HIGHLIGHTS

If the perceptual abilities of autocars were hooked into the police (moving about in their self-driven patrol cars), every road would be a speed trap and every car a radar gun.

ENGADGET: Editorial: Self-driving cars FTW, but not for everybody