连接标识符。

The connection identifier.

youdao

它们之间通过特殊的标识符(关键字)连接成一个整体。

Between them through a special identifier (keywords) to connect into a whole.

youdao

它们之间通过特殊的标识符(关键字)连接成一个整体。

Between them through a special identifier (keywords) to connect into a whole.

youdao