He mentioned Greek, which has the letter Sigma, which is the equivalent of the Latin letter S. He said the lowercase has two different forms, one used at the end of words and another used everywhere else.
他提到了希腊语, 其中有字母 Sigma,相当于拉丁字母 S。 他说,小写字母有两种不同的形式,一种用在词尾, 另一种用在其他地方。