英语语法分析

The perpetrator of the crime does not have to be traced before you can claim compensation.

不一定非要抓住罪犯之后你才能够索赔。

《柯林斯英汉双解大词典》

The ability to detect and catch a perpetrator, however, is less common.

然而，检测并捕捉入侵者的能力却并非同样普遍。

Forgiving the perpetrator for his action does not mean you stop judging the deed.

原谅犯事者并不代表你已经停止裁定这件事。