I've had a very unproductive day.我这一天什么事都没干成。Research workers are well aware that much of their time and effort is unproductive.研究人员很清楚，他们的很多时间和精力全都是白费。...increasingly unproductive land.越来越贫瘠的土地One quarter of the co...
我在飞机上没合一下眼。I didn't get a wink of sleep on the aeroplane.她抬眼迅速瞥了他一下，然后眼睛又垂了下去。She gave him a quick, upward look, then lowered her eyes.涂有深色唇彩的嘴唇看上去和浓艳的眼妆不相称。Very dark glossy lips look wrong with heavily made-up eyes...
在工业过程中, 常用精馏作用把液体混合物分离为纯组分.In industrial processes, liquid mixtures are often separated into their pure components by distillation.讨论用于甲醇生产主精馏塔改进工艺条件下的智能控制方法.An intelligent control method for operation of methanol refini...
One of the apprentices made an insulting remark to a passing officer.其中一名学徒对着一名路过的警官说了一句侮辱他的话。I feel the remark was inappropriate for such a serious issue.我认为对如此严肃的问题来说，该评论不合时宜。She flew at him for making a very anti-Brit...