feed steam

例句：

1. 1.The engine is producing a lot of feed steam.
   发动机正在产生大量的蒸汽。
2. 2. The farmer used to feed his cows with fresh milk from the farm's own cows.
   这位农民过去经常用农场自己的牛奶喂养他的奶牛。
3. 3. The steam was so hot that it could be felt through the windows.
   蒸汽非常热，以至于可以感觉到它通过窗户。