adj. station-to-station
最便宜的是叫号电话，然后是叫人电话。
The cheapest is a station-to-station call, then a person-to-person call.
为了测试基于电话的应用程序，您显然需要一台电话，这就意味着一个呼叫号码。
To test out a phone-based application, you obviously need a phone, and that implies a number to call.
我想打一个通华盛顿的叫号电话。华盛顿现在是几点。
I want to place a station-to-station call to Washington. What time is it there now?
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