孤独是自由的代价。

牛痘可以保护人体免受天花的感染。

I'm an occasional drinker, the kind of guy who goes out for a beer and wakes up in Singapore with a full beard.

The challenge is to ensure that the Internet remains a force for good, a tool for empowerment, and a platform for innovation.

贫困陷阱的核心：今天的饥饿偷走了明天的生产力。