Aim To investigate the constituents of flavonoids from the stings of Gleditsia sinensis L.目的研究中药材皂角刺中黄酮类化合物化学成分.In this paper, the chemical utilization of Gleditsia sinensis seeds, pods and stings has been discribled.介绍了...
He found it hard to concentrate on conversation so far removed from his present preoccupations.他发现很难专注于谈话，因为谈话内容和自己目前的当务之急毫不相干。Grand strategy and incredibly petty details were equally his preoccupations.从重大的战略方针,直到微乎其微的细...