Backstopping
支援（backstop的现在分词）
🗣️ 情景例句
I'm sick of English, I want to learn French.
我讨厌英语，我想学法语。
Johnny doesn't like me.
乔妮不喜欢我。
It's not.it is a little oversized.
不是，它比标准的大了一点。