美国紧急事务官员说，在近日横扫美国南部各州的猛烈风暴和龙卷风中，至少有200人丧生。
U.S. emergency officials say at least 200 people have been killed in violent storms and tornadoes that have swept through the southern U.S. states in recent days.
美国紧急事务官员说，在近日横扫美国南部各州的猛烈风暴和龙卷风中，至少有200人丧生。
U. s. emergency officials say at least 200 people have been killed in violent storms and tornadoes that have swept through the southern U. s. states in recent days.
另一个近期发表在《科学杂志》上的研究表明，由于气候变化导致的猛烈风暴会造成新的臭氧层空洞，增加陆地和海洋的紫外线辐射剂量。
Another recent study, this one in the journal Science, says the severe storms delivered by climate change could punch new holes in the ozone layer, upping our dose of radiation on land and at sea.
另一个近期发表在《科学杂志》上的研究表明，由于气候变化导致的猛烈风暴会造成新的臭氧层空洞，增加陆地和海洋的紫外线辐射剂量。
Another recent study, this one in the journal Science, says the severe storms delivered by climate change could punch new holes in the ozone layer, upping our dose of radiation on land and at sea.
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