Quizzes for review
I installed a three-way switch at the top of the stairs so we can turn the lights on or off from either floor.
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I installed a three-way switch at the top of the stairs so we can turn the lights on or off from either floor.
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Related words
three-way switch
Noun
US
Japanese Meaning
（米国）階段や長い廊下の両端など、2か所から照明を制御するために、ペアで用いられる双投式（ダブルスロー）照明スイッチ。 / （英国）2か所から照明を操作するための2路スイッチ。
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