The sex of the embryo is predetermined at fertilization.胚胎的性别早在受精时就决定了。...an ideal system for studying the development of the embryo...研究胎儿发育过程的理想方法Metabolic activity quickly develops in the cells of the embryo and the a...
It was in the beginning, when we were still ironing out problems.那是在刚开始，我们还在着力解决问题。I scorched my dress when I was ironing it.我把自己的连衣裙熨焦了。You should damp clothes before ironing them.在熨衣服之前应将衣服打湿。Fold the ironing board up ...
Strife was internecine during the next fortnight.在以后两个星期的冲突中我们两败俱伤.When they realize they face extremity, the victims will take an internecine measure to help them.在意识到面临绝境的时候, 村民很可能采取“两败俱伤”的自力救济行为.internecine strife amo...