秃头波尔山种羊:the number of diagonals that can be draw in a regular polygon with twenty sides(icosagon) is

a number of 和the number of 的区别 a number of 和the number of有何区别？ a number of 和the number of不同 the largest number of 作主语 英汉互译 the number of The lake is ______polluted so the number of the fish____. 用 a number of / the number of /dream of 造几个句子 翻译“a packing note quoting the number of the order” 翻译“a packing note quoting the number of the order” the latter formulates the cumulative number of faults detected