translation.en: A few years ago, I came up with a way to study people's happiness moment to moment as they're going about their daily lives on a massive scale all over the world, something we'd never been able to do before. Called trackyourhappiness.org, it uses the iPhone to monitor people's happiness in real time.
translation.zh: 几年前，我找到一种研究幸福感的方法 随时随地进行研究在人们日常生活中 并在全世界范围内开展，这些我们曾经 想都不敢想的事。我们把它命名为 trackyourhappiness.org(网址） 它能通过Iphone实时监测大家的幸福指数。