In an application, a nickname brings back data from a remote table, view, or date set. However, the following conditions will cause such an application to fail.
在应用程序中，别名可以从远程表、视图或数据集中取回数据。
2
Do not use the main application thread to make a remote call, as this would cause the application to become unresponsive while you wait on the remote server.
不要使用主应用程序线程发出远程调用，因为这将使应用程序在等待远程服务器响应时失去响应性。
3
This is the fourth cause, proximate and remote, of the appearance of a mighty earthquake.