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鸡兔49,100条腿,鸡和兔各多少?解方程式设:鸡=X,兔=Y.X+Y=49,2X+4Y =100要求把方程式解出来, well-constructed facade 神马意思?The problem is that a really well-constructed facade means they may never get really well-informed or find what makes them happy还有，Techniques for the Best Year of Sex Everinventor of The Orgasm Loop，神马 遇到横尸的动物,我们应该念什么超度? 超度去世的人念什么的?现在好多人会为自己的过世的亲人请和尚来做法师,和尚在念诵的是什么经文啊? 这个单词怎么理解?Since 1939,numerous studies have been conducted to determiSince 1939,numerous studies have been conducted to determine whether smoking is a health hazard.句中的conduct怎么理解? More studies should be conducted before conclusions are drawn. according这个词是什么意思急：according这个词到底是什么意思. PI 染色卵母细胞 细胞质很红 怎么办 已经清洗很多遍了 up的对应词 fight against是什么意思 一点点都听不懂了! 당신이 알고 사랑求翻译 baseball best,这个词组的汉语意思是什么? 怎么提高英语听力?（八年级上册男） y.《英语实践与提高》八年级上册（人教版）的答案units 1-12的答案 hope ___ hope填一词,并翻译成汉语 英语翻译快.我要通俗点的 how to focus on the things should done As I pray for the love got my way,Focus will just be your leave翻译 现有95%的酒精,要配70%的酒精70KG,请问要怎么配? everything、something、nothing、everyone、someone、no one.做主语时,怎么判断做单数还是复数说的具体点, built for hard pulling,the Husky has a deep wide chest,thick neck and iron-hard legs中文翻译 翻译 Neck and neck Ella: Between Liu Xiang and Day翻译 Neck and neck Ella: Between Liu Xiang and Dayron Robles, who do you like better? Jacky: I don’t know. They are neck and neck. 在某方面并驾齐驱是用be neck and neck at还是be neck and neck in? 在《紫藤萝瀑布》一课中,紫藤萝瀑布为什么能“带走了这些时一直压在我心上的焦虑和悲痛”? be+adj+to do sth是不是都用it做形式主语?动词不定式做宾补吗? like转换为延续性动词是? 一.英汉互译.1.放风筝2.上个星期3.一场足球比赛4.感到非常疲惫5.Don'tworry!6.much bigger 7.15 square meters 8.laugh at "Don'tworry,Mom.I'll go next door.I'llbe back in a few days. DON TWORRY ME IM FINE中文是什么 天若有情天意老是什么意思? 天若有情天意老?下一句是啥?