前言：
Earth Hour is an annual event which asks you to switch off all your lights for one hour. The aim is to involve as many people as possible in positive change for our planet.
地球一小時是一年一度的活動，要求關掉所有燈一小時。這樣活動的目的是盡可能讓更多的人來積極的參與關於我們星球的變化。