back channel

中文含义：后台渠道；秘密管道

英语词性：noun

美式发音：/’bæk ˌtʃæn.əl/

同义词：alternative channel, covert channel, underground route

易混淆单词：backstage（后台），backpack（背包）

双语例句：

1. During the meeting, the diplomat used the back channel to communicate with his colleagues in his home country.

在会议期间，外交官利用后台渠道与他在本国的同事进行了沟通。

2. The tech giant established a back channel to maintain communication with the government officials.

这家科技巨头建立了一个后台渠道，以与政府官员保持沟通。