药物洗发精会有些帮助，如含有锌的硫化铁矿物质或含有硒的硫化物，甚至含有焦油和水杨酸的强力洗发精。
Medicated shampoos will help, including zine pyrithione or selenium sulphide, and even stronger shampoos containing tar or salicylic acid.
爱斯基摩人利用硫化铁矿石击打石英获得缓慢燃烧的火花。
The Eskimos produced a slow-burning spark by striking quartz against iron pyrites.
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