请输入您要查询的英文单词：
单词
know sth like the back of your hand
释义
know
sth
like the back of
your
hand
informal
to have very good anddetailedknowledgeof something
精通；对…了如指掌
I know thisarealike the back of myhand.
我对这一地区了如指掌。
#https://dictionary.cambridge.org//dictionary/english-chinese-simplified/know-sth-like-the-back-of-your-hand##