字母的

The word “debt” contains a mute letter.

在debt这词中有不发音的字母。

In a dictionary the words are arranged in alphabetical order.

词典里的词是按字母顺序编排的。

Delta is the fourth letter of the Greek alphabet.

δ是希腊字母中的第四字母。

The heading was in large letters.

标是用大号字母印刷的。

It's very difficult! but I think it should be "hexad", and "hex" left when we take away the last two letters.

什么样的五字母的词，当你拿掉两字母后还有六？