Knuckled
v. （指人）指关节( knuckle的过去式和过去分词 ); （指动物）膝关节, 踝
🗣️ 情景例句
No. This is my first visit.
没有。这是第一次。
We are happy to be of help.
我们十分乐意帮助。
It is no use learning without thinking.
学而不思则惘。