As you've seen, most commands emit output of one kind or another.

正如您所看到的，大多数命令都会产生某类输出。

youdao

Emit some output in the window named one by typing echo in that window.

在one窗口中输入echo，在此窗口中产生一些输出。

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This command USES the klogctl system call to read the kernel ring buffer and emit it to standard output (stdout).

这个命令使用klogctl系统调用来读取内核环缓冲区，并将它转发到标准输出(stdout)。

youdao

Porsche expects the 918 Spyder to emit 70 grams of carbon dioxide per kilometre travelled, which is about the same as the output of a tiny city car.

ECONOMIST: Fast cars will go even faster with electric power