twitches

The horse twitched its ears.

马抽动耳朵。

Suddenly Guy, more by way of a nervous twitch than with malice aforethought, pulled the trigger.

盖伊突然扣动了扳机，但他并非有意开枪，只是因为太紧张，抽搐了一下。

The level of voluntary activation and activation failure at the same angle was estimated by the twitch superimposition technique, using a 1 Hz supramaximal electrical stimulation.

在这些角下，自主徵召及徵召失败的程，是对股四头肌施以每秒一次的超强电刺激以抽搐上加技术来检测。