Of course, this information could be sent over a standard telephone line as well, but giving every vending machine a fixed telephone connection for one call a day is expensive on account of the fixed monthly charge.
英
美
释义
当然,这些信息也可以通过电话来发送,但是,给每台贩卖机安装固定电话,并且每天只打一次电话,这样带来的费用是非常高的,因为每个月都有固定的月租费。
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