Complements
n. 补足语；其余产品；互补品（complement的复数）
🗣️ 情景例句
Thank you, sir.
谢谢您，先生。
What's good about it?
有什么好？
American country music. He writes most of his songs himself.
美国乡村音乐。他演唱的歌曲，多数是由他自己写的。