您要查找的是不是：
- limnic coal deposits 湖沼煤系
- There are extensive coal deposits in the U.S.S.R. 苏联的煤的储藏很丰富。
- It's difficult to ascertain the coal deposits. 煤储量很难探明。
- Canada used to be rich in coal deposits. 加拿大曾经盛产煤矿。
- The geologist proves up a coal deposits. 地质学家探明了一个煤矿的藏量。
- He is busy with proving up a coal deposit. 他正忙于勘探煤层。
- The coal industry is running down as coal deposits are used up. 由于煤藏枯竭,煤炭工业正在衰落。
- But the parliament would like to increase Mongolia's stake in the Tavan Tolgoi coal deposit to at least 51 percent. 现在的蒙古法令规定私有公司34%25的矿产收入要交给蒙古政府。
- U.S. and Chinese scientists have begun mapping the geologic distribution of fluorine and arsenic within regional coal deposits to determine the least harmful sites to establish quarries. 中、美地质学家已经开始调查贵州煤层的氟、砷含量，想找出最无害的采矿地点。
- The country is short of known deposits of coal. 这个国家缺少已知的煤矿矿床。
- The washability of coal deposited in high peat bogs is better than that deposited in low peat moors. 高位泥炭沼泽形成的煤可选性好，而低位泥炭沼泽形成的煤可选性差。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。
