Backstops
n. 挡球网；捕手；支撑物
🗣️ 情景例句
It's dangerous to leave your children along while you go shopping.
购物时，把你的孩子单独留在家里是挺危险的。
I'm going to the bookstore. Will you go with me?
我要去书店，你和我去吗？
I'm afraid some people forgot to sweep the floor.
它不如平时干净，恐怕是一些人忘记扫地了。