# What you gain
特斯拉无人驾驶技术在阿布扎比完成道路实测
，这一点在safew官方版本下载中也有详细论述
更致命的是，很多在中国运营的邮轮，外籍服务员不会说中文，客人还得迁就他们讲英文。这就很分裂了：你在我家门口做生意，服务的是90%的中国客人，最后还要我说英语配合你？
We even tried building hierarchies with 2-3 levels, but the number of shortcuts grew too fast for higher levels if we generated a full graph inside each cluster.
Reddit is organised into user-created communities called subreddits, where content is ranked by user voting rather than chronological order.