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只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.There are just four kinds: adenine, thymine, guanine and cytosine.腺嘌呤:在DNA和RNA中发现的含氮的碱基 ( 6 - 氨基嘌呤 ).Adenine A nitrogenous base ( 6 - amino - purine ) found in DNA and RNA.尿嘧啶 -- 核糖核酸中的一种嘧啶,与腺...
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“见解”的拼音为：jiàn jiě...
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title的近义词/同义词有：designation, name, tag, caption, label, headline, paper, term, christen, name, possession, book, claim, dignify, caption, designation, holding, headline, label, heading, entitle, prescription, diploma, mor...
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“颠倒”的拼音为：diān dǎo...
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asymmetric的反义词有：symmetric。adj.asymmetric的反义词（不对称的）：symmetric。...
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n.（计算机）文档( document的名词复数 )，证件，公文，[用复数]票据...
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“距离”的拼音为：jù lí...
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“活性炭”的英语可以翻译为：[化] acticarbon，activated carbon，active carbon，active charcoal ...
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同时，把碗置于微沸的水上，将白巧克力放入碗中使其熔化。Meanwhile, melt the white chocolate in a bowl suspended over simmering water.磨碎一汤匙鲜姜，放入平底锅。Grate a tablespoonful of fresh ginger into a pan.将洋葱放入平底锅内，炒至略呈棕色。Put the onions in the pan and cook u...
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allowance的近义词/同义词有：ration, budget, portion, grant, allotment, fee, grant, portion, maintenance, connivance, yes, confession, allotment, compensation, budget, subscription, license, concession, payment, admission, fee, re...
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n.常绿植物，常绿树，常绿树枝adj.[植] 常绿的，永葆青春的...
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adj.虚弱的( feeble的比较级 )，无效的，缺乏决心的，无力的...
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v.改善，改良，变好( meliorate的过去式和过去分词 )...
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The Martian atmosphere contains only tiny amounts of water.火星的大气层中只含有极少量的水。The Martian landscape is extremely varied.火星上的景象变化极大.These facts mean that the Martian day and night have about the same lengths as ours.这些事实说明,火...