common practice;regular routine [procedure] ;

The balance wheel of a watch is a familiar example of angular harmonic motion.
钟表的摆轮是角谐运动的常例.
来源:词典精选例句It is common practice for clubs to loan out players to sides in the lower divisions.
俱乐部把球员外借给下级联赛中的球队是常例。
来源:《柯林斯高阶英汉双解学习词典》The shootings began with a routine traffic stop in which one officer shot, another wounded.
枪击发生在一次常例的交通停歇,当时一名警官被击中, 另一名受伤.
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