steam exhausting way

例句：

1. 1. The steam from the kettle has warmed the room.
   茶壶里的蒸汽使房间变暖了。
2. 2. The train was moving at a high speed, and the steam made it difficult to see.
   火车以高速行驶，蒸汽使得视线变得模糊。
3. 3. The steam engine is an important invention in the history of transportation.
   蒸汽机是交通运输史上的一个重要发明。