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switch lock /səspˈɛnʃən ˈɪnsjuːlˌeɪtə ˈstɹɪŋ/ n

中文：开关锁

中文 · 开关锁Español · seguro del interruptorFrançais · blocage de l’interrupteur
Meaning：Device locking the switch in position to keep the saw working for a prolonged period.
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Power drill

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