He was detected in the act of stealing.他在偷窃时被当场发觉.Ken was in the act of paying his bill when Neil came up behind him.当尼尔从后面走过来时,肯正在付账。He was caught in the act of stealing the sweets.他正在偷糖时被抓住了....
最优秀的队员受了伤,使得这支队伍的实力大打折扣。The team suffered a major setback when their best player was injured.他办此事不能打折扣.He can't take it with a grain of salt.付现金可以打折扣.You will have a reduction for cash....