I know this because at DoSomething.org, which is the largest organization for teenagers and social change in America, about six months ago we pivoted and started focusing on text messaging.
我了解这些，是因为DoSomething.org网站 它是全美最大的 青少年与社会变革组织 六个月前，我们发起了一项活动 并且开始关注短信