环境保护主义者关于人口问题的归责长期唇枪舌剑争论不休：人口总量即与之对应的供给人口需要的水、食物、矿产和清洁的空气总量等等。
Environmentalists are arguing in circles about who or what is to blame: the total number of people; or the amount of water, food, mineral ores or clean air each demands.
植物学是解决一些世界上最紧迫的问题：如何减少空气和水的污染，如何养活爆炸性增长的人口，如何节约能源，等等。
Botany is tackling some of the world's most pressing problems: how to reduce air and water pollution, how to feed an exploding human population, how to conserve energy, and so on.
根据关于这个问题的一本新书报道，生产仅仅一升的这种饮料需要1120升水，从种植咖啡豆，到包装以及计量等等。
According to a new book on the subject, 1,120 litres of water go into producing a single litre of the beverage, once growing the beans, packaging and so on are measured.
应用推荐