常用词汇：
sea 海
ocean 海洋
seaman 海员
explorer 探险家
coastline 海岸线
seaweed 海草
longitude 经度
latitude 纬度
water resource 水资源
water pollution 水污染
water shortage 水匮乏
protect the water resources from being polluted 保护水资源不受污染
take up 占据
cope with the problem of water pollution 处理水污染问题
范文：
Ladies and gentlemen, Good morning. I’m Li Hua from Fujian, China. It’s my great honor to be here to say something about the global water shortage and ways of dealing with it. As we know, the global water shortage is becoming increasingly severe mainly due to global warming, environmental pollution and the ever-increasing population. Therefore, it’s high time we did something about it.
Firstly, an effective way, I think, is to reserve water in a scientific way for future use. Secondly, new methods need to be developed to use the existing water resources, for example, turning sea water into fresh water. Thirdly, we must stop water pollution by law. Last but not least, it’s everyone’s responsibility to make good use of water, such as recycling and saving water in our daily life.
In conclusion, people around the world should be aware of the real situation of water shortage, protect the present water resources and explore potential ones scientifically.
That’s all. Thank you.
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