pea coal

例句：

1. 1. The pea coke is a popular fuel for heating homes.
   豌豆煤是一种受欢迎的家庭取暖燃料。
2. 2. Thepea coke was used as an alternativeto charcoal in the old days.
   在旧时代，豌豆煤被用作木炭的替代品。
3. 3. The pea cokeis now mainly used as a source ofenergy in power plants.
   现在，豌豆煤主要作为发电厂能源的来源。