Evolution can explain why human embryos look like gilled fishes.进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样.A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn.不定胚与合子胚之间不能划分出明显的界限.Most grass embryos have a fla...
Evolution can explain why human embryos look like gilled fishes.进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样.Early division phase embryos may use metabolites provided by the suspensor, persistent and degenerating synergids.早期分裂时期的胚可以利用胚...
She was really quite perturbed at the prospect.她对前景十分担心。I am deeply perturbed by the alarming way the situation developing.我对形势令人忧虑的发展深感不安.Mother was much perturbed by my illness.母亲为我的病甚感烦恼不安....
waterless cleaning无水清洁A broken blue line means the course of a waterless valley.蓝色虚线代表无水流过的山谷。a waterless barren region干旱的荒芜地区Waterless offset : Offset printing using waterless plate, thus the damping system may be elimi...
Keith took a map from the dashboard and opened it out on his knees.基思从仪表板上的贮物箱里拿出一张地图，在膝盖上摊开。The dashboard itself is divided into three vacuum Fluorescence Displays.仪表板本身化分为三个真空荧光显示器.We are convinced that the customer wi...
这是对他们从不曾真正拥有的青春时代的回归.It's a retreat into the adolescence they never really had.他们不曾料到会有这样一次打击.They had not visualised such an attack.起床之后我一直忙忙碌碌的,不曾得闲.I've much to do since I got up....