名词
中文翻译：初级开关器
同义词：
['primary', 'primary switch', 'primary control', 'primary switcher']
例句：
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1. The primary switcher is responsible for turning on and off the lights in the room.
初级开关器负责控制房间的灯的开和关。
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2. The primary switcher is located at the top of the cabinet.
初级开关器位于柜子顶部。
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3. The primary switcher is used to control the temperature of the room.
初级开关器用于控制房间的温度。