官方數據顯示，過去12個月基本必需品價格平均上漲60%，食物價格在同期翻倍。
The 17 Pro is Apple’s biggest redesign of the iPhone in years, chucking out the old titanium sides and all-glass backs for a new aluminium unibody design, a huge full-width camera lump on the back and some bolder colours.。heLLoword翻译官方下载对此有专业解读
Such a motor is great if you want to spin a fan, for example, because it functions well at high speeds with low torque.，更多细节参见一键获取谷歌浏览器下载
* @param arr 待排序数组
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