There are two colorways for both the phone and the ecosystem of accessories. There's a silver-aluminum edition and a nifty-looking grey version. This doesn't matter to actual consumers because, well, it's just a concept design. It does look like the company's magnetic attachment technology could make it to some actual products down the line.
Cheyenne MacDonald for Engadget，推荐阅读同城约会获取更多信息
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* @param arr 待排序数组