几百名警察集合起来,阻住了主要道路.Hundreds of policemen were summoning up to block the main roads.雪阻住了汽车道上的交通.Snow has blocked off traffic on the motor way.我们被一大堆工作阻住了.We were bogged down with a lot of work....
自交能孕性在不同的无性系中是明显不同的.There are obvious differences between clones with regard to their self - fertility.反交和自交通常不包括在内.Reciprocals and selfs are usually excluded.俄维农自交和野百合自交可以获得自交果实和自交胚.Fruits and embryos were obtained by s...