it is not feasible and promptly go back to sleep这里为什么要省略to

it is not feasible and promptly go back to sleep这里为什么要省略to 英语翻译How can we test economic theory when controlled experiments are not feasible?This is a problem,but economics is no different from astronomy in this respect.but they must deal with the world as it is.They can not change the course of the s Beijing is a ,it is not a countryBeijing is a ,it is not a country It is a h_,not a cat. it is not just a planet ,it is our home . what is it?it is not a wheel. It is my life ,not be a not,it,a,french,car,is造句 It is not a c() linexiexie It is not a paradox 中文翻译 It does not matter if a teacher is not organised. To clone a child to get organs is feasible对吗.我觉得不对啊,但是在线翻译是这样翻译啊 英语翻译Cantilever .Often it is not feasible to construct long span bridges by means of intermediate piers .In deep swift-running rivers or in soft subsoils ,for example ,it may be difficult to construct the piers or to make them deep enough to r It is not a joke!It is not a joke!句型和别都对？ please do not t____it .it is not a cat it is a baby tiger 英语谜语It is not in a house.It is not outside a house.It is part of a house It is not in a huose,It is not outside a house,It is part of a 英语翻译Moreover,the economically rational may not be politically feasible.