月球绕地球运行的轨道不是浑圆的, 而是椭圆的.The moon doesn't describe a circle round the earth, but rather an ellipse.本文介绍了一种鲜为人知的用直径距离描绘椭圆的方法.This paper introduces a rarely seen method of describing with diametral distance.叶子的形状;椭圆的形状....
The crew fought a losing battle to try to restart the engines.全体船员努力尝试重新启动发动机，但结果徒劳无功。The commissioners agreed to restart talks as soon as possible.委员们同意尽快重新开始会谈。They would now find some dubious pretext to restart the wa...
Whenever Daniel's little sister was asked to do something she always had a naughty reply.每次让丹尼尔的妹妹做什么事，她总是要淘气地回嘴。I have received neither an acknowledgment nor a reply.我未收到任何复函或答复。Deryck Fox gave Featherstone the lea...
These may bind to receptor molecules on the surfaces of cells.这些可能会在细胞表面和受体分子结合在一起。The volume of gas trapped on these surfaces can be considerable.存留在这些表面的气体体积可能相当大。The two surfaces adhered, and we couldn't get them...
Scientists call these pieces exotic or suspect terrains.科学家们把这些小陆块叫外来或嫌疑地块.In the western of China are intricate terrains and many hilly regions.我国西部地区地势复杂,多丘陵.There are also lots of algorithms to create artificial terra...