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该机不用硬币也能打电话。使用时,只需将事先购买的磁卡(如同电车联票一样)插入,即可拨号通话。在通话期间,剩余次数(相当于剩余联票的
The machine can call without coins. When in use, simply insert the pre-purchased magnetic card (like a train ticket) to dial the number. During the call, the remaining number of times (equivalent to the remaining coupons