คำว่า
act up
act up ความหมายคือ act up 〈口〉1. (机器)运转不正常;(疾病)发作 The vacuum cleaner is acting up again. 真空吸尘器又出毛病了。His stomach had been acting up constantly. 他的胃病经常发作。 2. 耍脾气;捣蛋 The boy acted up whenever guests came. 这男孩一有客来就发“人来疯”。Act up and I'll beat your ass. 你敢捣蛋,我就打你个屁滚尿流。The river frequently acts up. 那条河常闹灾。 3. 代行更高的职务;晋升