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Absorption spectra of three novel coumarin sensitizer incorporate benzylidene cyclopentanone moiety were studied.比较研究了三种含苄叉环戊酮基团的新型香豆素类光敏染料....
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“推”的反义词：拉。...
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the serpentine course of the river蜿蜒曲折的河道Serpentine often contains some asbestos , and should be used with caution .因为蛇纹石往往包含了一些石棉，收集时应谨慎。One part of the Serpentine is kept for swimmers.蜿蜒河的一段划为游泳区....
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You need to take your problems to a trained counsellor.你需要去找训练有素的咨询顾问请教这些问题。They sought the help of a marriage counsellor.他们寻求婚姻顾问的帮助。a marriage guidance counsellor婚姻指导顾问...
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glucoresin的音标：glucoresin的英式发音音标为：[glu:kə'rezɪn]glucoresin的美式发音音标为：[glukə'rezɪn]...
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n.成串，束状...
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unbelief的反义词有：belief, bearable。n.unbelief的反义词（疑惑;不信）：belief。unbelief的反义词（其他释义）：bearable。...
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“荣幸”的拼音为：róng xìng...
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n.齿菊石...
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dermatolysis的音标：dermatolysis的英式发音音标为：[dɜ:mə'tɒləsɪs]dermatolysis的美式发音音标为：[dɜmə'tɒləsɪs]...
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n.哈里斯特c-4炸药，方黝铜矿...
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受热气体通过水中的盘管输送。The heated gas is piped through a coil surrounded by water.水可以用管子输送.The water may be carried by means of a pipe.根将水分和养料输送到干和枝.The roots transmit moisture and nutrient to the trunk and branches....
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n.股东( shareholder的名词复数 )...
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Who is to preside over the meeting hasn't been decided.这个会议要谁来主持还未决定.Who happened to preside over the economic crisis at the time?当发生经济危机时谁正好在掌权?Every Monday morning I convene and preside over our department meeting...