在大多数封闭的系统中，往往为人们分配特定于应用程序的标识符。

In most closed systems, people tend to be allotted identifiers specific to the application.

youdao

在大多数封闭的系统中，往往为人们分配特定于应用程序的标识符。

In most closed systems, people tend to be allotted identifiers specific to the application.

youdao