这个包含了每一个像素的颜色和亮度信息以及同步信号的最终信号称为组合视频信号（composite video signal).

This final signal, containing the color and intensity of each pixel in a set of rows, along with horizontal and vertical sync signals, is called a composite video signal .

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在给定信号强度和噪声水平的情况下，以比特每秒为单位给出的最终限制是无差错通信的最大绝对速率。

The resulting limit, given in units of bits per second, is the absolute maximum rate of error-free communication given signal strength and noise level.

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由于筋疲力尽，罗斯不得不辞掉工作，搬到离家370公里以外的地方以躲避 Wi-Fi 信号，但最终还是没能成功。

Being completely tired, Rose had no choice but to quit her job and moved 370 kilometers away from her home to avoid Wi-Fi signals but failed.

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The cell that's producing the signal produces enough of the molecule so that it enters the bloodstream, it circulates throughout your body, eventually it reaches a cell at a great distance, which has a receptor for that ligand and the signal gets received.

发出信号的细胞产生信号分子,数量十分充足 能够进入到血液中,信号随着血液流遍全身,最终到达较远处的细胞,在这些细胞上有与配体配对的受体,信号被细胞接收

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