anthracite coal是什么意思 anthracite coal怎么读
anthracite coal的英文翻译是什么意思，词典释义与在线翻译
Noun:- a hard natural coal that burns slowly and gives intense heat
anthracite coal的用法和样例
- We should use anthracite to avoid air pollution.
我们应该使用无烟煤以防止空气污染。 - Soft coal burns with more flames than hard coal.
烟煤燃烧时火焰较无烟煤多。
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