遇上真正行家我的工作就相形见绌了。 A true professional could knock my efforts into a cocked hat.
昨天我试着泥墙，但搞得一塌糊涂，现在我得去请个行家来干，这正说明各人各有的特长。 I tried plastering a wall yesterday and made a total mess of it; now I'll have to call in an expert, which just proves that it is very man to his trade.
我知道我该怎样去干，我不会冒昧地指挥一个行家的工作。 I know my place and I wouldn't presume to tell an expert how to do his job.
用廉价的仿制品骗不了行家。 You can't fob an expert off with cheap imitations.
