1. The firefighter arrived in the nick of time to save the child.
消防员及时赶到，救了那个孩子。

2. She handed in her assignment in the nick of time.
她在截止时间前及时交上了作业。

3. The medicine was given in the nick of time to prevent further illness.
药物及时服用，避免了病情加重。

A: Did you finish the report on time?
A：你及时完成报告了吗？

B: Yes, I submitted it in the nick of time.
B：是的，我正好及时提交了。

1) 正好及时

2) 在最后一刻发生

3) 避免危机或麻烦

1. 在关键时刻及时完成某事

e.g. He arrived in the nick of time to stop the argument.
他及时赶到，阻止了争吵。

idiom

1. Happening at the last possible moment, just in time to prevent trouble or danger.

Synonym: just in time, at the last moment, at the eleventh hour