虽然餐馆每年都会丢弃数以吨计的食物，但由于垃圾箱被锁、卫生法规或商业政策等原因，很多食物仍然无法食用。

While restaurants throw away tons of food each year, much of it remains inaccessible because of locked garbage containers, health regulations, or business policies.

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该研究算出，这一工厂已经生产了大约6吨军用的或90%浓度的浓缩铀。

The study calculates that the plant has facilitated about six tonnes of weapon-grade or 90% enriched uranium.

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结果是生产力的飞速提高，可以用制造一辆自行车、一部个人电脑、或一吨绝缘材料的工时来衡量。

The result was a wondrous surge in productivity, defined as the hours needed to make a bicycle, a PC, or a ton of insulation.

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