Biserrate
[植]重锯齿的
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
You never know what you can do till you try.
事非经过不知难。
Where he made mistakes, he admitted these willingly.
无论在哪里犯了错误，他都乐于承认。