1. One tablet will purify a litre of water. 一丸即可净化一升水。
2. It is sold to the public at eight cents a litre. 它以每升8美分的价格出售给公众。
3. It takes about one litre of water to produce one calorie from food crops. 从粮食作物中生产一卡路里需要大约一升水。
4. Ethanol is corrosive and has less energy per litre than petrol and diesel. 乙醇具有腐蚀性,每升的能源比汽油和柴油少。
5. Previously it was thought there were around 100, 000 microbial cells in every litre of seawater but scientists now think there could be one billion. 在此前的推测中,每一升海水中可能会有大约10万个微生物细胞,但现在科学家们认为有可能达到10亿个。