- 推荐网络例句
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Because of the property of donative electron of the methoxy group and the participation of the carbonyl group of the coumarin into the complexation proces...
研究表明，由于在香豆素的6 位上引入一个甲氧基，对应的主－客配合物的稳定常数较（7－甲氧基－4－亚甲基）香豆素基－单氮杂－ 18－冠－6（ MMC－ MAC（O5））与阳离子配位的稳定常数又有所增高。
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You'll soon get used to the life in the countryside.
你就会习惯乡下的生活的。
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I bought a new ball point pen with an electronic watch especially for this test .
为了这次考试，我专门买了一支表笔。
Don't
stop moving...