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...
The discovery was something of a fluke.这个发现多少有点机缘巧合。His election victory was just a fluke.他的当选纯属侥幸.Many adversities decimate the fluke numbers.许多很不利的因素可使吸虫数量减少十分之一....
为什么不给所有的镜头都配上遮光罩呢？Why aren't all lenses supplied with a lens hood?因此我们得制作一块很大的遮光窗帘。We therefore had to contrive a very large black-out curtain.那网球裁判戴着遮光帽檐.The tennis umpire wore an eye - shade....
The same old favorites recur year in year out with monotonous regularity.相同的决心以单调的规律年复一年地出现.Is there any regularity in English word stress?英语的重音有什么规律吗？Aircraft passed overhead with monotonous regularity .飞机一次又一次反复从头顶飞过。J...
Puis un jour, un homme et une femme arriv è rent à l 'é table.有一天, 一对夫妇来到了牲畜棚.Renforcer la coop é ration en faveur des droits de l'Homme et de l'Etat de droit.加强在促进人权和法制建设领域的合作.L'homme aurait voulu of...