Backstep
后退
🗣️ 情景例句
Try putting him across your lap on his stomach.
试试让他趴着睡在你大腿上。
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
I'm sorry, but it's not allowed.
对不起，这是不允许的。