不赶趟

不赶趟 :

Literally means:

be late; lag behind

Actually means:

It means having not enough time to do something.

It means lagging behind or being out of date. It is mean often used to refer to people's thoughts, behaviors or dressing style that are out of date. Slightly derogatory.

来不及（做某事）。

比喻落后，跟上社会上主导的潮流。多指思想、行为、衣着仍停留在很久以前的水平。略含贬义。