【英语时差8,16】创造臭氧层-下

No. No? No, we can't manufacture enough ozon to replenish the ozon hole. why not? Several reasons, for one thing, ozone¹ in large quantities is extremely hazardous² and volatile³, which makes it hard to work with, to say the least. Also, the ozone layer is immense–there’s roughly twenty billion tons of it–and we’d have no way of handling such large quantities. Plus, the ozone layer requires a huge amount of energy to maintain itself, which right now it gets from the sun. Taking over natural ozone production would require more than double the energy the United States produces annually⁴. And that’s why the only way we know to fight ozone depletion⁵ is by cleaning up our act and giving nature the chance to take its course.

1 ozone   

n.臭氧，新鲜空气

参考例句：

• The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。
• The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。

2 hazardous   

adj.(有)危险的，冒险的；碰运气的

参考例句：

• These conditions are very hazardous for shipping.这些情况对航海非常不利。
• Everybody said that it was a hazardous investment.大家都说那是一次危险的投资。

3 volatile   

adj.反复无常的，挥发性的，稍纵即逝的，脾气火爆的；n.挥发性物质

参考例句：

• With the markets being so volatile,investments are at great risk.由于市场那么变化不定，投资冒着很大的风险。
• His character was weak and volatile.他这个人意志薄弱，喜怒无常。

4 annually   

adv.一年一次，每年

参考例句：

• Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
• They celebrate their wedding anniversary annually.他们每年庆祝一番结婚纪念日。

5 depletion   

n.耗尽，枯竭

参考例句：

• Increased consumption of water has led to rapid depletion of groundwater reserves.用水量的增加导致了地下水贮备迅速枯竭。
• Farmers should rotate crops every season to prevent depletion of the soil.农夫每季应该要轮耕，以免耗尽土壤。