名词
中文翻译：开关动作
同义词：
['switch action', 'switch operation']
例句：
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1.The on-off action of the switch is very smooth.
开关的开合动作非常顺畅。
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2. The on-off action of the light bulb is very fast.
灯泡的开关动作非常快。
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3. The on-off action of the door is very reliable.
门的开关动作非常可靠。