coal是不可数。
We have enough coal to see the winter out .我们有足够的煤过冬。
We have received an order for two tons of coal .我们已收到两吨煤的定单。
Coal itself is a heavy pollutant .煤本身就是一种严重的污染物。
He contracted to supply me with coalregularly .他订约将煤按期供给我们。
There are extensive coal deposits in the u.s.s.r .苏联的煤的储藏很丰富。
A small coal fire burned in the grate .炉子里生着小小的煤火。
He is busy with proving up a coal deposit .他正忙于勘探煤层。
I hate to see someone raked over coals .我讨厌见到别人挨骂。
Coal seams intermixed with iron ore .煤层和铁矿混杂在一起。
