(1)turn over 1)brin e.g.My stomach tumed over. 2)think about;consider e.g.His father had been turning the ideaover in his mind for some time. 3)transfer to another give the control of sth.to sb. e.g.The thief was tu to the police me available for leisure activities,whether partly planned,as with parks,or left withou any control.as with wilderness.Such an environment.not disturbed by man.would maintain an ecological balance 14.It might seem that to withdraw underground is to withdraw from the natural world, so? draw:move back or away;tumn out or away e.g.He breathed a sigh of relief and withdrew to his office. He withdrew all his money from the bank. 15.but however carefully restricted the upward trips might be,the chances are that f the w cave ould s (1)restrict:vt.keep or confine within limits e.g.The new law restricts the sale of hand guns. Speed is restricted to 30 mph in towns (2)“However+-形容词+主语+谓语”的句式相当于“Although."句式，引导让步状 语从句，意思是“不管…如何”。 (he)chances are that”"是非正式的口语表达方式，意思是“很可能” The dwellers of the new caves would see than dwellers of surface cities do... 未来新洞穴里的居民与今天地面城市的居民进行比较，主句中的would see是虚 拟语气，表示对将来情况的推测。 sentence into chin 一包不的的旅行做出多么认喜的限制，新洞六里的居民将有可能比今天地面一 城市的居民在更为健康的生态条件下见到更多的绿色。 16.However odd and repulsive underground living may seem at first thought,there are things to be said for it-and I haven't even said them all. Meaning:No matter how srange and upndeo nay seem at first ration,ther is still a lot to bes I ha aven't ever mentioned them all. IV.Summary 1.Main idea of the text In this short Asimo ov imagines a future where ife is made more comfortable and secure by going entirely underground.Though the suggestion may seem odd and unpleasant at first thought,Asimov argues that there are definite advantages to underground life.Then he lists four advantages,and,using his expertise. explains them one by one in some detail leading the reader step by step to see how (1)turn over 1) bring the bottom to the top or vice versa; rotate, cycle e.g. My stomach turned over. 2) think about; consider e.g. His father had been turning the idea over in his mind for some time. 3) transfer to another; give the control of sth. to sb. e.g. The thief was turned over to the police. (2) Meaning: With less land needed for buildings and agriculture, more would become available for leisure activities, whether partly planned, as with parks, or left without any control, as with wilderness. Such an environment, not disturbed by man, would maintain an ecological balance 14. It might seem that to withdraw underground is to withdraw from the natural world, but would that be so? withdraw: move back or away; turn out or away e.g. He breathed a sigh of relief and withdrew to his office. He withdrew all his money from the bank. 15. but however carefully restricted the upward trips might be, the chances are that the dwellers of the new caves would see more greenery, under ecologically healthier conditions, than dwellers of surface cities do today. (1) restrict: vt. keep or confine within limits e.g. The new law restricts the sale of hand guns. Speed is restricted to 30 mph in towns. (2) “However+形容词+主语+谓语”的句式相当于“Although …”句式, 引导让步状 语从句，意思是“不管……如何”。 “(the) chances are that”是非正式的口语表达方式，意思是“很可能”。 The dwellers of the new caves would see … than dwellers of surface cities do … 将 未来新洞穴里的居民与今天地面城市的居民进行比较，主句中的 would see 是虚 拟语气，表示对将来情况的推测。 (3) Translate the sentence into Chinese. 但不管对向上的旅行做出多么认真的限制，新洞穴里的居民将有可能比今天地面 城市的居民在更为健康的生态条件下见到更多的绿色。 16. However odd and repulsive underground living may seem at first thought, there are things to be said for it — and I haven’t even said them all. Meaning: No matter how strange and unpleasant underground living may seem at first consideration, there is still a lot to be said to support the idea — and I haven’t even mentioned them all. IV. Summary 1. Main idea of the text In this short essay, Asimov imagines a future society where life is made more comfortable and secure by going entirely underground. Though the suggestion may seem odd and unpleasant at first thought, Asimov argues that there are definite advantages to underground life. Then he lists four advantages, and, using his expertise, explains them one by one in some detail, leading the reader step by step to see how