他一把抓起听筒，空着的手则摸索着找床头灯的开关。
He snatched up the receiver and his free hand groped for the switch on the bedside lamp.
同理，卧室照明灯应在卧室进门和床头安装双控开关。
Similarly, the bedroom lighting should be installed in the bedroom door and bedside dual control switch.
这儿是床头灯的开关。
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