每个城市都有性别和年龄，这与人口统计无关。
"Every city has a sex and an age which have nothing to do with demography."
A story doesn’t have to be loud to be heard.
Innovation in coal mining isn't just about extraction—it's about doing it smarter, safer, and with greater respect for the environment.
生物学将把人类的每一个基因与其他动物和细菌的基因联系起来，形成这个伟大的生命链。