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关于时间与变化的习语
把同一情境的习语放在一起学，更容易记住。这里是 English Idioms App 中这个主题的 10 个习语，每个都有释义和例句。点选一个，查看详细内容。
- Once in a blue moon极少发生。“We eat out once in a blue moon.”
- In the long run从长远来看。“This habit will save us time in the long run.”
- When pigs fly永远不会；发生的可能性极低。“He says he'll clean his room when pigs fly.”
- Better late than never迟做总比不做好。“You finally sent the thank-you note: better late than never.”
- In the nick of time就在即将来不及之前。“We reached the platform in the nick of time.”
- Call it a night结束晚上的活动，通常是为了回家或睡觉。“It was nearly midnight, so we decided to call it a night.”
- Around the clock日夜不停地。“The emergency team worked around the clock.”
- Out of the blue毫无预兆地，出乎意料地。“An old friend called me out of the blue.”
- Sooner or later未来的某个时候，虽然不知道确切时间。“Sooner or later, you will need to replace those shoes.”
- Time flies感觉时间过得出乎意料地快。“Time flies when we're chatting; I didn't notice it was already midnight.”