你不会意识到自己经历了多少直到你环顾四周才发现已是沧海桑田，时过境迁。

You won't realize the distance you've walked until you take a look around and realize how far you've been.

youdao

你不会意识到自己经历了多少直到你环顾四周才发现已是沧海桑田，时过境迁。

You won't realize the distance you've walked until you take a look around and realize how far you've been.

youdao