in time
1．within or before a fixed time及时
We got to the station just in time to catch the train．我们及时赶到火车站乘上火车。
A stitch in time saves nine．及时处理，事半功倍。
You can rest assured that we'll finish the work in time．你放心吧，我们一定按时完成任务。
The doctor came in time to save his life．医生及时前来挽救他的生命。
2．eventually；in the end； after a while；in the future不久；最好；将来
Fred and Jim did not like each other at first，but in time they became friends．弗雷德和吉姆开始互不喜欢，可是最终他们成了好朋友。
You'll get used to the weather in Nanjing in time．你迟早会适应南京的气候的。
If you keep on trying，you will succed in time．只要你继续努力，你迟早会成功。
3．in step合拍子
The marchers kept in time with the band．游行者和着乐队的节奏往前走。