Helicopters have only been worked on by man since 1940.怎么翻译这句话,主要是only 我不解

Helicopters have only been worked on by man since 1940.怎么翻译这句话,主要是only 我不解 LOVE ONL Y Be here just be there my one and onl... I am very boredI think I have fell in love with you.I am a fish,and you are like the water.I can`t live without you.I miss you .DO you know:I am thinking of you .when I saw you aren`t on line,I am so upset that I don`t know what to do.Maybe I can onl 英语问题急待解决填空1.my mother told me______the purpose of our visit was.a.what it b.it was c.what d.what it was2.If they were here tomorrow,the problem______.a.would be solved b.would have been solved c.would solve d.were to solve3.If onl 第一题：if 1除以（2的11次方乘以5的17次方）is expressed as a terminating decimal,how many nonzero digits will the decimal have?A1 B2 C4 D6 E11第二题:The fabric needed to make 3 curtains sells for $8 per yard and can be purchased onl 英语翻译This is the prisoner's dilemma,a concept in game theory Game theorists have determined that speaking up is always the answer for both parties in this case.The reason for this is that each party must assume that the other will act with onl 完型能人解答People ___1_____ under different star signs have different ways of ____2____ sorry.Aries:Arians think they are lovely and gentle and it is __3______ for them to do the wrong things and they will never hurt ___4_____.So they will onl 1.Helicopters droped water on the fire and fought the fire.【改错】1.Helicopters droped water on the fire and fought the fire.【改错】2.We must stop to watch TV.lt's time for bed.【改错】 the helicopters were able to rescue all but one of those aboard.请问这句怎么翻译 IN MY EYES I SAW YOU ONL Y IN THE WORLD中文翻译 找一首歌,很安静的英文歌,里面有句only one onl one,叫什么名字啊 I hope you will be my onl、 never leave me 求翻译、 介词填空：1.The should ( ) the rain is quiet. 2.Helicopters drop water ( ) the fire.3.The forest burn ( ) the fire. Life is mostly beautiful,don't wear a wan smile!Life is a chain of moments of enjoyment;not onl Mr.Clarke lives at the foot of the mountain .He keeps the forest for a rich farmer there .The onl 求助英语句子结构分析和理解!Helicopters take off straight into the air.They can land just about anywhere.请问在这个句子中,just about在这的用法和意思? 英语翻译Under what conditions are helicopters found to be absolutely essential?这句话应该怎样翻译呢?因为 在什么样的条件下直升机被认为是必备的.是这样翻译吗?