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
Thanks, Dad.
谢谢，爸爸。
Pat, pat. He is patting the kid on his head.
拍，拍。他在轻拍着那个小孩的头。
That's correct.
没错。