炉膛口

例句：

1. 1. The engineer carefully inspected the furnace to ensure it was functioning properly.
   工程师仔细检查了炉子，确保它正常工作。
2. 2. The fireman quickly responded to the call and arrived at the scene with a hose.
   消防员迅速接听了电话并带着水龙带赶到现场。
3. 3. The chef carefully measured the ingredients before starting to cook.
   厨师在开始烹饪之前仔细测量了食材。