150. account for: （数量/比例上）占……；导致；对……负责 Chemical products account for approximately two-thirds of our exports. 化工产品占我们出口商品的约三分之二。 His theory doesn’t account for all those cases. 他的理论无法解释所有的情况。 The official should account for the incident. 该官员应为这起事件负责。
151. take something in someone’s stride: 从容处理，泰然处之 He took the problem in his stride. 他轻而易举地应付了这个问题。 get/hit into one’s stride 渐入佳境 Both teams seem to have hit/got into their stride in second half. 双方球队似乎在下半场进入了状态。
152. die out: 强调物种消失的结果 die off: 强调物种消失的过程 Many species will gradually die out. 很多物种会逐渐灭绝。 Many species are dying off. 很多物种正面临绝种。
