know the ropes
英 美
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。
The moment she got to know the ropes, there was no stopping her.
一旦她懂了行,她就一往无前了。
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。