boiling-off

例句：

1. 1.The pot of water was boiling over withsteam.
   这锅水正冒着蒸汽。
2. 2. Thesoup was boiling off the heat.
   汤正在从热源中蒸发。
3. 3. Thefire was boiling over withexcitement.
   火苗正因兴奋而燃烧得旺盛。