He's the king of unlicensed boxing.他是黑市拳王。The police officers are weeding out the unlicensed liquor sellers.警察在取缔无证酒贩.Many endangered species have been decimated by unlicensed hunters.许多濒临绝种的物种被非法的猎人大量扑杀....
Water can be reduced to oxygen and hydrogen by electrolysis.用电解法可以把水分解为氧和氢.The chemist reduced water by electrolysis.化学家用电解法把水还原为氢.Electrolysis is also used to plate one metal on another.电解也用于将一种金属电镀在另一种金属上....