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...
Anna grinned slyly.安娜会意地咧嘴笑了。She glanced slyly at Madeleine.她诡秘地向马德琳瞥了一眼.He would allow John slyly to copy his answers to impossibly difficult algebra questions.他会让约翰偷偷抄下自己对一些极难的代数题的解答....
英国煤层的平均厚度为1米。The average UK coal seam is one metre thick.他正忙于勘探煤层.He is busy with proving up a coal deposit.煤层的炭化程度取决于温度.The degree of carbonization of coal depends on the temperature....
袋鼠和考拉熊产非常幼小虚弱的幼子.Kangaroos and koala bears give birth to very small and weak young.一位母亲,她的幼子住院了.A mother whose young son have go into hospital.这家的幼子只是给这家带来麻烦.The youngest son has only brought down trouble on the family....