I've been to London before so I know the ropes.

我去过伦敦，所以我了解伦敦的状况。

youdao

I've been to the United States before so I know the ropes.

我去过美国，所以我熟悉那里的风土人情。

youdao

I had worked with him since the beginning of the project, so I know all the ropes.

自从该项目早期我就跟在他下面做事了，所以我知道全面细节。

youdao

After two years in college, I think I finally know the ropes.

进了大学二年了，我想我终于懂得诀窍了。

youdao

I can know if you're there as soon as I pull the ropes.

我一拉绳子就知道你们还在不在这里。

youdao

I can know if you're there as soon as I pull the ropes.

我一拉绳子就知道你们还在不在这里。

youdao