与前一年相比，哥伦比亚广播公司的收视率再次大幅提高。CBS's ratings again showed huge improvement over the previous year.同其他同类情况相比，这件事还算简单。This is a straightforward case, as these things go.他的双腿和他庞大身躯的其他部分相比瘦得可怜。His legs were pitifully thin co...
Stem cells a lesson from dedifferentiation.干细胞:从脱教训.The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况....
He would stay for hours at a stretch in the laboratory.他在实验室里一蹲就是好几个小时.Can you work ( for ) six hours at a stretch?你能连续工作六小时 吗 ?Today I really swam to my heart's content . I did 3,000 metres at a stretch.今天我一口气游了三千米...