intimate knowledge of something
3 intimate knowledge of something对某事了如指掌 his intimate knowledge of the coal industry他对矿产行业了如指掌 ..
基于18个网页-相关网页
know sth like the palm of one's hand
... with folded palms合掌 palm of one's hand手掌 know sth like the palm of one's hand对某事了如指掌 ...
基于2个网页-相关网页