Addendum circle
[机] 齿冠圆
🧩 词语组成解析
addendum
[ə'dendəm]
n. 附加物;补遗;附录;<机>（齿轮的）齿顶（高）;
🗣️ 情景例句
Is this all Grandpa's stuff?
这里面都是爷爷的东西吗？
A hero is known in the time of misfortune.
时势造英雄。
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。