He kept bumbling on about something.他结结巴巴地说个不停.Most of us are novices on the computer — just bumbling about on them.我们大多数人都是电脑新手——只会到处瞎鼓捣。He is sometimes bumbling but he is always well - intentioned.虽然有时候他做事笨手笨脚的,但他总是出于一...
The idea of cloning extinct life forms still belongs to science fiction.克隆已经灭绝的生物的想法仍旧只限于科幻小说中。These are inserted into a cloning vector.它们被插入克隆载体.And Infigen Inc. of De Forest , Wisconsin recently succeeded at cloning a ...