Serial.print(b, BYTE) prints b as a single byte followed by a carriage return and a linefeed.

以单个节输出b，并同时跟随一个回车和换行符。

) would expand the terminology to include byte (usually an 8-digit binary number) and even nybble (half a byte, or 4 binary digits).

后来维纳把这一术语引伸到节（通常是一个8位数），甚至半节（半个节，即4位数）意思。