The technique has been to mutate the genes by irradiation or chemicals.该技术是通过放射线照射或者使用化学方法使基因变异。The after effect occurs only if the additive is present during irradiation.在辐照过程中只有当添加剂存在时才出现后效应.Early lesions can be succes...
He has been slaving in the garden for hours.他在花园里干了数小时.He stares at the hundreds of workers slaving away in the intense sun.他凝视着在炎炎烈日下辛苦劳作的几百名工人。When you're busy all day the last thing you want to do is spend hours ...
His mind was in a fog when he finally got up.他终于起床了，头脑一片混沌。The fog had lifted and revealed a warm, sunny day.雾已经散了，看来是温暖晴朗的一天。She heard the sound of the guns thundering in the fog.她听到雾中传来隆隆的枪炮声。...
The singer was surrounded by the usual crowd of lackeys and hangers on.那个歌手让那帮总是溜须拍马、前呼後拥的人给围住了.For every one or two talented people in any group of artists, there are hordes of talentless hangers-on.在任何一群艺术家中，每一两个有才华的人周...