/twɪtʃ; twɪtʃ/
n
1 sudden rapid (usu involuntary) movement of a muscle, etc 抽搐; 抽动; 痉挛
*I thought the mouse was dead, but then it gave a slight twitch.我以为那只老鼠死了, 这时候它却微微地抽动了一下.
2 sudden pull or jerk 突然的拉或晃动
*I felt a twitch at my sleeve. 我觉得有人扯了一下我的袖子.

v
1 [I, Tn] (cause sb/sth to) move with a twitch or twitches （使某人[某物]）抽动或抽搐
*The dog's nose twitched as it smelt the meat. 那狗一闻到肉味, 鼻子直抽动.
* Her face twitched with pain. 她的脸疼得抽搐起来.
2 [Ipr, Tn, Tn.pr] ~ at sth pull sth sharply with a light jerk 猛然轻拉某物
*He twitched nervously at his tie. 他紧张地拽了拽领带.
* She twitched the corner of the rug to straighten it. 她拉了拉小地毯的一角, 把它弄正.
* The wind twitched the paper out of my hand. 一阵风把我手中的报纸刮跑了.