twitch(动词/名词):(身体某部分)抽动、痉挛;(尤指紧张、受刺激时)轻微抖动。也可引申为“(情绪/反应的)一丝波动”。(另有较常见的含义指网络直播平台,此处以常用动词/名词义为主。)
/twɪtʃ/
His eyelid began to twitch when he got nervous.
他一紧张,眼皮就开始抽动。
As the verdict was read, a twitch of anger crossed his face, quickly replaced by a practiced calm.
宣判结果被宣读时,他脸上掠过一丝愤怒的抽动,很快又被刻意的镇定所取代。
twitch 可能与中古英语中表示“猛拉、急扯”的词有关,核心意象是“突然、短促的拉扯/抖动”,后来常用于形容肌肉或身体部位的快速、不自主抽动。