"between you and me“不是”在你我之间"!

01 between you and me

你我之间 ×

就我俩知道（保密） √

It's between you and me, don't tell anyone else. 这事就你我知道，别告诉其他人。

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02 between them

在他们之间 ×

一起 √

Between them, they saved enough money to buy a car. 他们一起存钱买了一辆车。

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03 in-between

中级的√

He's at the in-between stage, neither a child nor an adult.他处于中级阶段，既不是孩子，也不是成人。