double hearth burner

例句：

1. 1. The double hearth burner is perfect for heating a large room.
   这个双火炉烧水器非常适合加热一个大房间。
2. 2. We used the double hearth burner to warm up our cabin during the cold winter nights.
   我们在寒冷的冬夜使用双火炉烧水器来取暖我们的小屋。
3. 3. The double hearth burner was a great addition to our outdoor kitchen.
   双火炉烧水器是我们户外厨房的一个很棒的补充。