Noun:

1. a way of letting you know that someone else is calling when you are using your telephone

callvt.呼叫；打电话；把 ...称为n.打电话；访问；召唤；呼叫；把 ... 看作vi.呼叫；(短暂的)拜访Callangn.卡良(在菲律宾；东经 121º37' 北纬 17º02')

1. Waiting to be called by the data flow engine.
   等待被数据流引擎调用。
2. Waits for the application to try to make a system call.
   会等待应用程序尝试进行系统调用。