I don't think he'll stay long in this job-he gives the impression that he's just trying it for size, and he'll move to something better as soon as he gets the chance. 我想這事兒他干不長，他給人的印象是他干這事只是要看看是不是很合適，一有機會，他就會另謀高就。
A person with his ambition won't stay long in a potty little firm like this. 一個有雄心大志的人在這樣一個不起眼的小公司里是待不長的。
She won't last long in that job it's too tough. 她做那件工作堅持不了多久--那工作太困難。
He's getting a bit long in the tooth to be playing football. 他踢足球未免年齒過長了。
