good spark

例句：

1. 1.The old lamp still has a good spark left in it.
   旧灯仍然有好的火花。
2. 2.The new car engine has a good spark.
   新车发动机有好的火花。
3. 3. The firefighters used their good spark to start the fire.
   消防员们用他们的好火花来点燃火。