Microsoft launched Windows 10 operating system
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　　Microsoft sought to put itself back at the cutting edge of the technology industry on Wednesday as it unveiled a headset that overlays holograms of imaginary objects on to the real world, alongside an upgrade to its Windows operating system.
　　
　　微軟推出Windows 10操作系統
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　　微軟周三發布了最新Windows操作系統，同時發布了一款頭盔，能將多種虛擬物品的全息圖像疊加在真實世界上。微軟試圖以這款頭盔重返高科技產業的最前沿。