five 是“ 五” 的意思。
字典解释：
five|faɪv| A.noun
①(number, quantity) 五
five plus two equals seven 5加2等于7.
②(figure, representation of a five)表示五的符号 。
③(group, unit of five) 五个一组。
the horses paraded in fives这些马每五匹一组列队前进 。
④(in time)5点钟 at five (o'clock)在5点 。
⑤(on playing card)5点 (in series)编号为5的东西。
