Ozone is a highly reactive form of oxygen gas.臭氧是一种非常活跃的氧气形态。Ozone is produced by the reaction between oxygen and ultra-violet light.臭氧由氧气和紫外线发生反应而产生。Carbon, hydrogen and oxygen combine chemically to form carbohydrates a...
They slept till the alarm bleeper woke them at four.他们一直睡到4点钟被寻呼机闹钟叫醒.You have to carry a bleeper so that they can call you in at any time.你要随身带着寻呼机，以便他们随时呼你。...
Instead of rushing at life, I wanted something more meaningful.我不想混日子，我想做点更有意义的事情。The crickets stridulated their everlasting monotonous meaningful note.蟋蟀发出了它们持久的,单调而有意思的调子.She believes these talks will be the start of a...
They had stopped Ecuador from building up attacks with good marking.他们运用出色的盯人技术使厄瓜多尔队无法组织起进攻。Ecuador lies between Columbia, Peru, and the Pacific Ocean.厄瓜多尔位于哥伦比亚 、 秘鲁和太平洋之间.Ecuador provides a perfect introduction to Sou...
他们中的一些人坦率地表达了自己的政治观点。Some of them make no bones about their political views.坦率地说，你认为这个学校怎么样？What do you think of the school, in your honest opinion?这本书信集感情真挚，语言坦率，还透着一种顽皮的滑稽。This collection of letters is affectionate, ca...