在以上的管道线中，我们在开始时使用一些生成输出的命令，然后通过管道线的每个阶段导出输出。
In the above pipelines we started with some command that generated output and then piped that output through each stage of the pipeline.
语音识别器只有一项工作，就是从三个选项中选择它认为最接近所听到内容的选项，并将该命令传递到下一阶段。
The speech recognizer has only one job, which is to choose whichever of the three options it considers to be the closest to what it heard and pass that command to the next stage.
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