很可能根本就没有凶手。

It was odds-on that there was no killer.

《柯林斯英汉双解大词典》

警察知道他们得抓住那个凶手。

The police knew they had to trap the killer.

《柯林斯英汉双解大词典》

警方尚未逮捕杀害她的凶手。

Police have not apprehended her killer.

《柯林斯英汉双解大词典》

Many of them say it's remarkable that they were never pushed to the point where they want to gun at their classmates, because they feel like they know what kinds of experiences these young boys went through.

很多人认为不可思议,这两个凶手竟然会被逼到这个份上,拿着枪对这自己的同学，因为他们觉得他们知道,这些青少年男孩子们所经历的一切。

麻省理工公开课 - 媒体、教育、市场课程节选

If you lived on this side, I should be a murderer.

如果你在我这边,那么我就是一个凶手

耶鲁公开课 - 欧洲文明课程节选

In countries like India, the reports tend to emphasize, to a greater degree, the situation that the person found himself in that might have driven him to commit a murder.

但在印度这样的国家，很大程度上，报道着重于，迫使凶手犯下谋杀案的,实际情况。

耶鲁公开课 - 心理学导论课程节选