fire tube heater

例句：

1. 1.The fire tube heater in the kitchen is very efficient.
   厨房里的火管加热器非常高效。
2. 2.The fireplace in the living room is a popular choice for heating the space.
   客厅里的壁炉是供暖空间的热门选择。
3. 3.The electric heater in the bedroom keeps the room warm during cold nights.
   卧室里的电加热器在寒冷的夜晚保持房间温暖。