心皮是由大孢子叶两边愈合进化而来的.It has evolved by fusion of the two edges of the megasporophyll.孢子异型:指植物产生两种大小不同的孢子: 小孢子和大孢子.Heterospory The production of two different sizes of spore: microspores and megaspores.通常较大的大孢子含有更多的贮藏养料.The ...
There is a pumping station on the edge of the lake.湖边有座扬水站.He was pumping away.他正用抽水机抽水.Aerobic exercise gets the heart pumping and helps you to burn up the fat.有氧运动加速心脏跳动，有助于消耗更多脂肪。...
方法对经临床确诊为肺栓塞患者测定其血浆D - 二聚体与纤维蛋白原浓度.Methods: The plasma fibrinogen and D - dimer in pulmonary embolism patients were measured.质谱研究表明这些配合物均以二聚体的形式存在.Their Mass Spectra show that they are dimers in gas phase.方法 通过3例典型病例,测血浆...
We were still provincials in the full sense of the word.严格说来,我们都还是乡巴佬.Only provincials love such gadgets.只有粗俗的人才喜欢玩这玩意.There was certainly a striking contrast between Charles Grandet , and the worthy provincials.查理?葛朗台跟那...
His gross misman-agement left the company desperately in need of restructuring.他管理上的重大失误使公司陷入亟须重组的境地。They were found guilty of acts of gross indecency.他们因存在严重猥亵行为而被判有罪。Interest is paid gross, rather than having tax deduc...