They went clumping up the stairs.他们拖着沉重的脚步走上楼。Men in big construction boots were clumping in and out with plans in their hands.一群男人穿着大建筑靴，手中拿着图纸，噔噔噔地走进走出。Wipe the wand off before the first coat to prevent clumping.把睫毛棒刷干...
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 ...