n.杀人者；凶手；致命物；消灭…者；棘手的事；迷人的人；精彩的事物

The killer stabbed him with a knife. 凶手用刀刺他。

DNA confirmed he was the killer. DNA检测确认他就是杀人凶手。

Heart attacks have become Britain's No. 1 killer disease. 心脏病已成为英国的头号致命疾病。

"That was the killer blow," says Mr Longfellow. “那是致命一击，”朗费罗先生说。

This is a new type of pain killer. 这是一种新的止痛药。

The English exam was a real killer! 这次英语考试真的太难了！

He thinks he's a lady-killer . 他认为自己是一个使女人倾倒的男人。

That green dress is a real killer. 那件绿衣服真好看。