许多种蓝藻有固氮的能力.Among the blue - green algae are many species of nitrogen fixation.菌根起着固氮和贮氮的作用.Mycorhizae perform the function of nitrogen fixation and storage.根瘤菌是生物固氮的能手.Nodule bacteria are very good at biological nitroge...
不用说，芭芭拉定会大有作为，因为她与众不同。You always knew Barbara was going places, she was different.芭芭拉·史翠珊是个天后级巨星。Barbra Streisand is such a humungous star.他一直单恋芭芭拉。He has always carried a torch for Barbara....
Cystic fibrosis is the commonest fatal here-ditary disease.囊性纤维化是最常见的致命遗传疾病。Collins wants to avoid repetition of the confusion that followed the discovery in 1989 of the cystic fibrosis gene.科林斯想要避免1989年发现囊肿性纤维化致病基因后的那种混...
The regions are interconnected by an excellent highway system.那些地区通过完善的公路系统相互连接。In France patois was spoken in rural, less developed regions.在法国，欠发达的农村地区说方言。The hunter-gatherer lifestyle today survives precariously in re...