常見例句A word is defined as a sequence of alphanumeric characters, so the end of a word is indicated by whitespace or a non-alphanumeric character.單詞被定義為一個字母數(shù)字序列，因此詞尾就是用空白符或非字母數(shù)字符來標(biāo)示的。 返回 alphabetic characters