know which is which
суметь различить, отличить одно от другого
Mark's house and Peter's house are so alike that I am often confused and don't know which is which.
Другие идиомы:
- know what's what
- know when one is not wanted
- know one's ABCs
- know (something) in one's bones
- know (someone) by sight
- know-it-all
- know one's own mind
- know (someone or something) like the back of one's hand
- know all the tricks of the trade
- know where (someone) stands on (something)
- know a thing or two (about someone or something)
- know where all the bodies are buried
- know (something) inside out
- not know if one is coming or going
- know better (than to do something)