know someone inside out (nuo samwan insaid aotu)

Idiom Relationships

含义

to know someone very well

非常了解某人 (feichang liaojie mou ren)

例句

"I know her inside out; we’ve been friends for years."

"我非常了解她;我们已经是多年的朋友了。" (Wo feichang liaojie ta; women yijing shi duonian de pengyou le.)