sparking plug

名词 sparking plug:

1. electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
   同义词：spark plug, plug

1. It's hard to get at the spark plug without a proper wrench.
   没有一把合适的扳钳，要抓住那个火花塞是困难的。
2. The car acted up because the spark plugs were dirty.
   汽车出毛病是因为火花塞脏了。