left parenthesis
常见例句
- Every left parenthesis in a string is matched by a right parenthesis.
字符串的左括號都有相應的右括號。 - A keyword followed by ( (left parenthesis) should be separated by a space.
跟在((左括號)後麪的關鍵字應被一個空格隔開。 - The enclosing left parenthesis is second from left; hence, $matches[2] is 123.
左括號是從左側算起第二個；因此，$matches[2] 是 123。 返回 left parenthesis