coal cake

例句：

1. 1. Thecoal cake is a popular snack in theregion.
   煤炭饼是该地区的流行小吃。
2. 2.The coal cake was made from local coal.
   这种煤炭饼是用当地的煤炭制成的。
3. 3. Thecoal cake is often used as a fuelfor cooking.
   煤炭饼常被用作烹饪燃料。