selected calling system

• 选择呼叫系统

selected calling system的用法和样例：

例句

1. Care staff would be alerted through the normal warden call system.
   照看人员通过一个标准看护呼叫系统得到警报。
2. At Sheri's, the property is adorned with red lights and a Tannoy system to call women to attend.
   在雪莉，房间装饰成红色，并配备一套扩音呼叫系统来进行召唤。