题目内容
AR是指“虚拟现实”，即用设备模拟真实环境。
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要引用适当的交互手段，不要“为了交互而交互”。
When the meal is concluded, place the finished napkin to ________ of your plate.
It is a good thing the businessman did not wear his_________ tie in the CzechRepublic where ________ is the symbol for poison and toxic materials.
It is best to lay the card in front of you on the table, esp. during the first meeting.it is a sign of respect in _______
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