By mapping water in cities along with population movements and expected rainfall, it should be possible to predict where cholera will spread.
将城市供水、人口迁移和预期降水在地图上描出来,就有可能预测霍乱传播的路径。
Official forecasts predict Britain's population will rise 15% by 2050, an extra 9m people.
官方预测,英国的人口到2050年会增加15%——九百万人。
Experts predict agricultural production will have to increase by 70% by 2050 to feed a population of some 9 billion people.
据专家预测,到2050年,要养活全球90亿左右人口,农业生产就必须要增加70%。
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