| 1. | Coal is much calorific than green wood . 煤产生的热量比湿木材多得多。 |
| 2. | It 's difficult to ascertain the coal deposits ... 煤储量很难探明。 |
| 3. | They have put up the price of coal again . 他们把煤的价钱又提高了。 |
| 4. | We ran out of coal , and had to burn wood . 煤烧完了,只好烧木头。 |
| 5. | I hate to see someone raked over the coals . 我讨厌见到别人挨骂。 |
| 6. | It 's more economical to use gas than coal .. 烧煤气比烧煤上算。 |
| 7. | We have enough coal to see the winter out . 我们有足够的煤过冬。 |
| 8. | We have received an order for two tons of coal . 我们已收到两吨煤的定单。 |
| 9. | Coal itself is a heavy pollutant . 煤本身就是一种严重的污染物。 |
| 10. | He contracted to supply me with coal regularly . 他订约将煤按期供给我们。 |