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First, a channel, or path, is formed that connects the cloud and the ground.

首先，会形成一个通道或一条路径，将云层和地面连接起来。

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The campaign provided a channel for protest against the war.

这场运动是反对战争的一种方式。

《牛津词典》

The first stop for his 12-meter boat, named "Finest Kind" is a channel right off the waterfront.

VOA: standard.2010.07.20

For these purposes think about a channel, it only allows sodium to go through for example.

基于此目的,我们来讲离子通道,拿仅允许钠离子通过的通道作为例子

耶鲁公开课 - 生物医学工程探索课程节选

A state where it's closed, so imagine a channel with a lid on top of it; when it's closed nothing can go through the channel, when it's open then things can go through.

一种是闭合状态,想想一个有盖子的通道吧,当盖子合上的时候任何东西都不能通过,而打开时就畅通无阻

耶鲁公开课 - 生物医学工程探索课程节选

"Clearing a channel across 10 countries would have taken a long time, " Hirsh said.

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Say, for instance, HBO, a channel cable-cutter have long wished they could subscribe to online.

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"Vertical jamming" sends powerful noise signals directly to the satellite to override a channel's entire feed.

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