"rotter" in Chinese (Simplified)
坏蛋坏家伙
Definition
“Rotter” 是英式口语，用来形容行为很坏或不友善的人，比如无赖或者不可信的人。
Usage Notes (Chinese (Simplified))
“Rotter” 主要在英式英语中出现，偏口语，多半是开玩笑或者温和地侮辱别人。美式英语中很少见，常出现在英剧或老作品里。
Examples
Don't trust him; he's a real rotter.
别相信他，他是个真正的**坏蛋**。
The children thought their neighbor was a rotter.
孩子们觉得他们的邻居是个**坏蛋**。
Only a rotter would do something like that.
只有**坏蛋**才会做那种事。
Wow, you forgot my birthday? You rotter!
哇，你居然忘了我的生日？你这个**坏蛋**！
He promised to help, but that rotter never showed up.
他说会帮忙，结果那个**坏蛋**根本没来。
Stop being such a rotter and give it back.
别当个**坏蛋**了，把它还回来。