Nowadays, his reading material has changed from science fiction and reference books: recently, he revealed that he reads at least 50 nonfiction books a year.
如今，他的阅读材料已从科幻小说和参考书转变为非虚构类书籍：最近他透露，自己每年至少阅读50本非虚构类书籍。
Gates chooses nonfiction titles because they explain how the world works.
盖茨选择非虚构类书籍，因为它们解释了世界如何运作。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。