卡特里娜飓风所引起的汹涌海水淹没了地势低洼岛屿的一半。
The surging waters of Hurricane Katrina submerged half of the low-lying islands.
2008年的纳尔·吉斯飓风席卷缅甸，一路上摧毁了一半以上的医疗中心，摧毁了五分之一医院。
Cyclone Nargis on 2008 damaged more than half of all the treatment centres in its path as it swept across Burma, and destroyed one hospital in five.
截止目前，今年的飓风季节即将结束，仅仅有三个飓风形成，数目比过去半个世纪的平均值还要少一半，而且没有一个飓风登陆美国。
As this year's Atlantic hurricane season ends, only three hurricanes have formed - half the average of the last 50 years - and none had hit the United States.
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