小麦是世界上种植最广泛的作物，为全世界五分之一的人口提供口粮。
Wheat is the most widely planted crop in the world, providing a fifth of mankind's calories.
这是历史上少有的急剧变动，要知道这里涉及世界五分之一的人口。
You will find few such abrupt changes in history - specially if you remember that it involves one-fifth of the world's population.
五分之一的人(占总数19%)不知道法语中表示“你好”的单词的意思，但这个单词是世界上最有名的外国问候语之一。
One fifth (19 per cent) did not know the meaning of the French word for hello, one of the most recognisable foreign greetings in the world.
印度恒河平原地区居住着世界七分之一的人口，种植着世界五分之一的小麦，他们很可能会遭受沉重的打击。
The Indo-Gangetic plain, home to a seventh of mankind and purveyor of a fifth of the world's wheat, is likely to be especially hard hit.
世界上有近五分之一的人都是吸烟者。他们大多来自患肺结核率高的国家，而正是在这些国家，跨国烟草行业早已经扩大了市场。
Nearly a fifth of people in the world are smokers; many in countries with high rates of TB where multi-national tobacco companies have expanded their markets.
2008年8月18日—全世界有五分之二的人口用不上厕所，六分之一的人口用不上安全饮用水。
August 18, 2008-two out of five people worldwide lack access to a toilet. One out of six does not have access to safe drinking water.
都市的光污染意味着，世界上五分之一的人们仅凭借裸眼将看不到银河。
Urban light pollution means that one-fifth of the world's population can no longer see the Milky Way with the naked eye.
美国凭着少于世界5%的人口，消耗了大约五分之一的能源。
With less than 5% of the world's population, the US consumes about one-fifth of the world's energy.
12亿左右的人口，约占世界人口的五分之一，生活在缺水地区(见地图)。
Some 1.2 billion people, about a fifth of the world's population, live in places that are short of water (see map).
在世界上中国有着最多的人口数量，世界上大约五分之一的人口生活在中国。
China has the largest population in the world, and about one fifth of the people in the world live in China.
南亚区域合作联盟成员国的领导人代表着世界五分之一以上的人口，也代表40%世界上最贫困的人。
The SAARC leaders represent more than one of every five people on the planet, but 40 percent of the world's poor.
他们的人口占世界人口的五分之一。
Their population is a fifth of the current total world population.
他们的人口占世界人口的五分之一。
Their population is a fifth of the current total world population.
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