know a hawk from a handsaw
US /noʊ ə hɔk frəm ə ˈhændˌsɔ/
UK /noʊ ə hɔk frəm ə ˈhændˌsɔ/
1.
分得清是非, 有常识
to be able to distinguish between two very different things; to have common sense
:
•
He may seem a bit eccentric, but he certainly knows a hawk from a handsaw.
他可能看起来有点古怪，但他肯定分得清是非。
•
Even a child should know a hawk from a handsaw when it comes to basic safety.
即使是孩子也应该在基本安全方面分得清是非。