With the addition of the toes on our feet a vigesimal (base 20) number system, like that of the Maya, also makes sense.

加上我们双脚脚趾，二十进位（以20为基数）数字体系也是合情合理。

Aimed at the group decision-making problem based on language estimation information, the way of common group mind in trapezia fuzzy number system is mainly discussed.

针对基于语言评价信息决策问题，重点研究了梯形模糊数体系体意见共识方法。