The Blue House says the two Koreas tested their communication channel on Tuesday morning.

青瓦台称，朝韩两国周二上午测试了沟通渠道。

Both sides agreed to keep communication channels open and maintain exchanges on their trade concerns.

双方同意保持沟通渠道畅通，就贸易关切保持交流。

North Korea reopened a cross-border communications channel with South Korea today, for the first time in nearly two years.

朝鲜今天重新建立了与韩国的通讯联系，这也是近两年以来的首次。

South Korea says the leaders of North and South Korea have agreed to restore suspended communication channels and improve ties.

韩国表示，朝鲜和韩国领导人同意恢复中断的沟通渠道，改善关系。

Different communication channels vary in their richness.

不同的沟通渠道其丰富程度各不相同。

This software will exploit any open communication channel.

这个软件会侵入任何开放的通信线路。

Formal communication channels are usually vertical.

【vertical】正式的沟通渠道一般都是纵向的。

Yet, as a communications channel, it's been largely relegated to Morse code-like cell phone notifications.

然而， 作为一种通信渠道，它在很大程度上被降级为类似于莫尔斯电码的手机通知。

Presidents Ford, Reagan, Bush, and Clinton saw the need to keep communication channels open with China.

福特、里根、布什和克林顿总统认为有必要与中国保持沟通渠道畅通。

Researchers study things like the use of emoticons, rules such as turn-taking, and language used in different communication channels.

研究人员还研究用户怎么用表情包，怎么轮换发言，以及用不同沟通渠道时，用词有什么区别。