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》

Many people think of the OPP as the 401 and radar gun, " he says."

很多人以为OPP 就只是在401高速公路上用雷达抓超速。

youdao

Other places have tried leaving empty police cruisers near intersections, even erecting life-size cutouts of small children or of a police officer aiming a radar gun.

其它地方还试用过在士字路口附近放空警察监视停，甚至还竖起过真实大小的小小孩与指着测速器的警察剪贴画。

youdao

"You don't have to light up the radar gun to be successful, " Uggla said.

WSJ: Davis breaks out in clutch, Mets rally past Braves

By the beginning of his sophomore year he was registering 93 to 95 miles per hour on the radar gun.

WSJ: Baseball 2013: Here Come the Flamethrowers

Yet at one point during his senior year in college he was clocking 92 miles per hour on the radar gun.

FORBES: He's Not Baseball's James Frey