The World is a book, and those who do not travel readonly a page.

世界是一本书，不旅行的人只看到其中的一页。

youdao

READONLY. The name of the channel on which the call originated.

只读。呼叫发起方的通道的名称。

youdao

READONLY. The name of the channel on which the call originated.

只读。呼叫发起方的通道的名称。

youdao