The channel is only a few centimeters in diameter, but that is wide enough for electrons to follow the channel to the ground in the visible form of a flash of lightning.
这个通道的直径只有几厘米,但它的宽度足以让电子以闪电这样看得到的形式随着通道到达地面。
Sometimes, however, a stream of electrons following an established channel is met by a positive stream making a new path up from the ground.
然而,有时,沿着已建立的通道的电子流会遇到正的电子流,正的电子流从地面开始形成新的路径。
Ms. Carr put her cancer experience in a recent Learning Channel documentary, and she has written a practical guide about how she coped.
卡尔女士在最近一期学习频道播放的纪录片中讲述了她的癌症经历,她还写了一本关于如何应对癌症的实用指南。
The Food Network is a cable channel that began in nineteen ninety-three.
VOA: special.2010.12.27
It can exist in - a gated ion channel - can exist in one or two states.
它们能够存在于,门控离子通道有一种或者两种状态
The one that's on the top here is called ligand-gated ion channel and an ion channel is a protein that sits in the surface of a cell.
最上面的这个叫作配体门控离子通道,离子通道是一类位于细胞表面的蛋白
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