1. When the fire had at last been put out, the forest authorities ordered several tons of a special type of grass-seed which would grow quickly.
    在大火最后被扑灭后，森林管理当局订购了好几吨一种生长迅速的特殊类型的草籽。

2. This is a merchant ship of 5 , 000 tons.
    这是一条五千吨的商船。

3. This truck carries 5 tons of coal.
    这部卡车载了5吨重的煤.

4. They used six million tons of rock.
    他们共用了六百万吨石头。

5. These huge stone blocks weigh an average of two and a half tons each, as much as a small car.
    这些巨大的石块平均每块重２吨半，像一辆小型轿车那样重，

6. That's when workmen using huge machines began clawing out 1,000 tons of clay every half hour as they bored from England to France.
    1987年开工时，工人们用巨大的机械设备以每半小时挖掘1,000吨泥土的速度由英国向法国掘进。

7. ´Jumbo must weigh a few tons,´ said a policeman afterwards,
    "江伯一定有好几吨重，"一个警察事后这样说，

8. Yet, loaded with practice bombs and 8,000 pounds of fuel, the mostly aluminum aircraft weighs some 15 tons.
    可是，携带着演习炸弹和8,000磅汽油，这架主要用铝合金制造的飞机重达15吨左右。

9. Some even weigh fifteen tons.
    有些石块甚至重达15吨。