他找到了那盏蓝灯，给了她一个信号，让她把他拉上来。
He found the blue light, and made her a signal to draw him up again.
对于大多数现有的协议，你必须计算反弹的均值以尝试找到你真正想要的那个信号。
For most existing protocols, you have to average these bounces to try to find the signal you really want.
较大的日志文件很难使用，这是因为它们需要过滤大量的噪声才能找到有用的信号。
A large log file is difficult to use because you need to filter out a lot of noise to find the useful signal.
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