tap a blast furnace

例句：

1. 1. He tapped the table gently with his finger.
   他用指尖轻轻敲打桌子。
2. 2. The artist tapped his foot impatiently.
   艺术家不耐烦地敲着脚。
3. 3. She tapped on the door to get in.
   她敲门想进来。