1. If the girl accepts, she will return the gift to the young man, if she refuses him, she will also return his gift, togather with a coal. this kind of custom which convey meaasages by things still remains in some remote moutian areas.
要是姑娘有心，便将原物奉还，倘若加上火炭送还就意味着拒绝。这种以物代言的遗风，今天在一些偏远山区，仍然保存。
2. Amount of the disturbed lands, unpaved roads, abandon soil, slag bodies and coal refuses in the development of the coal mine were the main material sources to the loss of soil and water.
煤矿在开发建设中，对地表的破坏形成了数量巨大的人为扰动地面、非硬化路面、弃土弃渣堆积体等，是矿区水土流失的主要物质来源。
3. Coal refuse can be utilized comprehensively, but the rate is only 20% owing to the limitation of technique and economy. There fore most of coal refuses have to pile and occupy land, which must be control.
煤矸石可综合利用，但因经济、技术等问题，我国矸石的综合利用度仅为20%，大量矸石只能堆存，故必须治理。
1. Canberra refuses to stop free market forces driving up prices for commodities such as iron ore and coal.