I decided to play along with her idea.

我决定假意听从她的意见。

I need you to play along.

我需要你自己去玩。

And we soldiers are forced to play along.

我们士兵则被迫必须随之而战。

I'll play along with you. My first wish is this.

我的第一个愿望是这样的。

But she decided to play along, got her swimsuit on.

但她还是决定和他们一起玩，她换上泳装。