Serrations
(serration 的复数) n. 锯齿状, 锯齿边\\n[医] 锯齿形, 锯齿构造
🗣️ 情景例句
Uh, are you going to be busy this evening?
今晚忙吗？
One never loses anything by politeness.
有礼貌对自己不会吃亏。
He holds a position of great responsibility upon him.
他担任着一个责任重大的职务。