translation.en: The first example is the largest annual community event -- where Googlers from around the world donate their labor to their local communities -- was initiated and organized by three employees before it became official, because it just became too big.
translation.zh: 第一个例子是最大的年度社区活动-- 来自世界各地的谷歌员工 为当地社区出力 这项活动最先 是由三个员工发起组织的 它之后成为正式活动， 是因为活动规模扩大了