1. Though he was technically a prize-fighter , Mendoza did much to change crude prize -fighting into a sport.
    门杜萨虽然就技术而论是一位职业拳击家，但他为把粗野的职业拳击变为一项运动做了不少贡献。

2. Though he was technically a prizefighter, Mendoza did much to change crude prizefighting into a sport, for he brought science to the game.
    虽然门多萨严格来讲不过是个职业拳击手，但在把这种粗野的拳击变成一种体育运动方面，他作出了重大贡献。是他把科学引进了这项运动。