coin exchanger

• 投币交换机

coin exchanger的用法和样例：

例句

1. He put a coin into the insertion slot.
   他往投币孔投入一枚硬币。
2. Automatic Coin Telephone Service includes a telephone company central office that can complete all types of payphone calls automatically without an operator.
   自动投币电话业务，包括电话公司市话局，可以不需要话务员而自动完成各种类型的公用电话。