He also has a trigger switch in his hand which allow this or that boot to release its magnetism, so the foot can be raised.

他同样还有个触发器握在手中以允许这个或那个靴子释放磁场，这样靴子就可以升高。

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Integrated Hall switch sensor is one kind of magnetism-sensing switch based on Hall effect.

集成开关型霍耳传感器是一种基于霍耳效应的磁敏开关。

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