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第三个动作，也是最重要却最容易被忽略的：「擦拭镜头」。，更多细节参见51吃瓜
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Each half of the board hinges in two places for minutely customizable center tenting. It has low profile keys with responsive yet quiet mechanical switches. It works wirelessly or corded, has thumb cluster keys and, of course, it’s all fully programmable. It's lovely to type on and the thumb clusters and modules make it easy to keep your fingers in the home position to minimize repetitive travel.