A merry road, a mazy road, and such as we did tread.快乐的路迷宫般的路我们踏行.They have to tread the delicate path between informing children and boring them...他们既要让孩子们了解情况，又不能让他们产生厌烦情绪，不得不小心把握分寸。Turnpikes are not for turkeys! Sandw...
We could now very plainly hear their heavy tread.我们现在可以非常清楚地听到他们沉重的脚步声。The fat, broad tyres had a good depth of tread.这种宽大的轮胎有很深的胎面花纹。Martin is inclined to rush in where angels fear to tread.马丁总是喜欢贸然行事。...
唯一的声响是冰层噼噼啪啪碎裂的声音。The only sound was the crackle of breaking ice.人们开始四下察看，想弄清楚那声响来自何处。People began looking across to see where the noise was coming from.她一直在房间里工作，直到有声响打扰了她。She'd been working in her room till a nois...
Converting metric measurements to U.S. equivalents is easy.将公制计量单位换算为美制计量单位十分简单。The continental beds are as thick as their marine time equivalents.陆相地层与其时代相同的海相地层具有一样的厚度.We have already met one series of specific enol eq...
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...