不过短信可不仅仅是微小，它们还是搭便车者，硬挤进了为无线网络运营而预留的信道里面。

But text messages are not just tiny; they are also free riders, tucked into what's called a control channel, space reserved for operation of the wireless network.

youdao

不过短信可不仅仅是微小，它们还是搭便车者，硬挤进了为无线网络运营而预留的信道里面。

But text messages are not just tiny; they are also free riders, tucked into what's called a control channel, space reserved for operation of the wireless network.

youdao