substring的用法和樣例：
例句
用作名詞 (n.)
- String character used to identify substring limits.
用於標識子字元串邊界的字元串字元。 - The first argument is the substring that matched.
第一個參數是匹配的子字元串。
辭彙搭配
- character array element substring name 字元數組元素子串名...
- array substring reference 數組子串引用...
- character array substring reference 字元數組子串引用...
- character array element substring 字元數組元素子串...
- character variable substring 字元變數子串...
