名詞 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
   同義詞：spark plug, plug

1. It's hard to get at the spark plug without a proper wrench.
   沒(méi)有一把合適的扳鉗，要抓住那個(gè)火花塞是困難的。
2. The car acted up because the spark plugs were dirty.
   汽車出毛病是因?yàn)榛鸹ㄈK了。