警察把人群疏散开.The police cleared the crowd away.河边疏疏落落有几棵柳树.The river was sparsely lined with willow trees.当初要是分几个冬天疏剪树木，会比一下子疏剪完效果好。It would have been better to have thinned the trees over several winters rather than all at ...
Production technologies and applications of aminothiazole - 4 - methylisoximino acid are introduced.介绍了氨噻 肟 酸的生产工艺及应用.Objective : To synthesize aminothiazole and its analogs, and evaluate their anti - influenza virus act...