sputtering of metals

例句：

1. 2.
   声音
2. 3.
   液体
3. 1.The metal was sputtering away when the sparks flew.
   火花飞溅时，金属在不断溅射。
4. 2.The engine sputtered as it ran out of fuel.
   发动机耗尽燃料后开始断断续续地运转。
5. 3.The boiling water sputtered and splashed around the pot.
   水在锅里沸腾并四处溅射。