twitchv.急拉；抽动；痉挛；抽搐n.扯；阵痛；痉挛Twitchell reagent特威切尔试剂twitching motility颤动Twitchells process特威切耳法twitch contraction单收缩； 骤然收缩twitching of eyelid睑颤搐Twitchell's process农民工twitch interpolation随意收缩叠加法Twitch mouth pressure颤搐性口腔压twitch a curtain aside用劲把窗帘拉到一边twitchirng Trousseau's民工潮