抢答器作为一种电子产品，早已广泛应用于各种智力和知识竞赛场合。
Answer wireless device Answer devices as an electronic products, has long been widely used in a variety of occasions, intelligence and knowledge competitions.
抢答器作为一种电子产品，早已广泛应用于各种智力和知识竞赛场合。
Answer wireless device Answer devices as an electronic products, has long been widely used in a variety of occasions, intelligence and knowledge competitions.
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