Why do you look so down in the mouth?你为什么显得这样消沉?Why are you so down in the mouth, anyway?不过,你为什么这么没精打采的?Paul looks down in the mouth because she failed in the attempt.保罗因为尝试失败看起来很沮丧....
他们的论据经不起一点推敲。Their arguments do not withstand the most superficial scrutiny.这个命题经得起推敲吗？How well does this thesis stand up to close examination?她的观点经不起认真推敲。Her argument doesn't really stand up to scrutiny....