卖煤者

例句：

1. 1. He is a coal dealer who deals in coal all over the country.
   他是一个在全国范围内从事煤炭交易的煤炭商人。
2. 2. The coal merchants are busy negotiating prices with the buyers.
   煤炭商人忙于与买家谈判价格。
3. 3. The coal dealer has been selling coal for many years.
   这位煤炭商人已经从事煤炭销售多年了。