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...
除了波西娅,我们都付了该交的份额, 她从来都没钱.We've all paid our fair share except Portia , who's never got any money.我们尽力不让皮特知道这个秘密, 可是波西娅给说漏了嘴.We were trying to keep it a secret from Pete, but Portia spilled the beans....