“约翰，”老师问道，“如果一吨煤。”
新器材把工人需要的时间减少了所以工人可以生产一吨煤（莫名其妙）。
New equipment and other improvements reduced the amount of time needed by workers so that they could produce a ton of steel.
“约翰，”老师问道，“如果一吨煤卖60美元，你给卖货人240美元，可以买几吨？”
"John, "said the teacher, "if coal is selling at $60 a ton and you pay your dealer $240, how many tons will he bring you?"
清华大学副教授腾飞指出，中国每生产一吨煤，就会产生286元人民币的环境和健康成本。
Every ton of coal produced in China adds more than 286 yuan ($46) in environmental damage and health costs, reported Teng Fei, an associate professor at Tsinghua University.
在食物旁边放的是一吨煤，一百箱柴火，用于为两人取暖的古董法式铁炉，另外还有马达用的柴油。
Crammed in alongside the food was a ton of coal and 100 boxes of firewood for the antique French iron stove that keep them warm, plus diesel oil for a motor.
另一个显示的是货运站，那里有长长的一排矿车，运送机正以一吨每秒的速度自动将煤装入矿车中。
Another shows the rail depot, where a long line of carriages is filled automatically from conveyors at the rate of a tonne a second.
但是，每生产一吨液态煤，就得从70公里以下的含水层中输出六吨半的水，排放到空中的二氧化碳也将超过三吨。
But for each tonne of the liquid, six and a half tonnes of water must be piped from an aquifer more than 70 kilometres away and more than three tonnes of carbon dioxide are released into the air.
但是，每生产一吨液态煤，就得从70公里以下的含水层中输出六吨半的水，排放到空中的二氧化碳也将超过三吨。
But for each tonne of the liquid, six and a half tonnes of water must be piped from an aquifer more than 70 kilometres away and more than three tonnes of carbon dioxide are released into the air.
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