sparking alloy

例句：

1. 1. The sparking alloy in the torch was causing a fire.
   打火机里的火花引发了一场火灾。
2. 2. The engineer used a sparking alloy to weld together the metal parts.
   工程师使用一种点火合金将金属部件焊接在一起。
3. 3. The sparking alloy was designed to be easily recharged and last longer than traditional batteries.
   这种点火合金被设计为容易充电，比传统电池更持久。