Backgear
[机] 后列齿轮
🗣️ 情景例句
When you learn a new verb, learn its various forms.
学到了新动词时，记住它的各种形式。
It is easier to raise the devil than to lay him.
养虎易，驯虎难。
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”