Drake is a good man and far too young to die, but I suppose the doctor knows his business.

德雷克是个好人，不该英年早逝。不过医生肯定有他的道理。

Says I, 'Am I a gardener as knows his business, or arn't I, Mills?

我说，‘我是一个熟悉他的业务的园丁， 还是不是，米尔斯？

No skin off me, but a man's got to know his business.

我倒无所谓 可你得懂行啊。

It’s a long story, but his friends started to know his business, and that was dangerous.

说来话长，但他的朋友们开始了解他的生意， 这很危险。

" I'm more and more convinced that whoever poisoned Ashgrove knew his business, and will consequently never be found out. That's a capital cigar you've given me" .

“我越来越相信， 给阿什格罗夫下毒的人知道他的生意， 因此永远不会被发现。那是你给我的大雪茄” 。

His manner was so quiet, so reasonable and receptive, that Granice's self-confidence returned. Here was a sensible man — a man who knew his business — it would be easy enough to make him see through that ridiculous alibi!

他的举止是那么安静，那么通情达理，善于接受，格兰妮丝的自信又回来了。这是一个明智的人——一个了解他的业务的人——要让他看穿那个荒谬的不在场证明是很容易的！