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1·So on Wednesday I just put open parenthesis, closed parenthesis.

所以在周三，我只加入了左括号，右括号。

2·The first regular expression will match the string main followed by any number of Spaces or tabs, followed by an open parenthesis.

第一个规则表达式将与后面依次跟有任意数量的空格或制表键以及开始圆括号的字符串“ main ”匹配。

3·Also, when you type an open parenthesis or double quote, Eclipse will provide its partner automatically and place the cursor inside the pair.

当您键入开括号或双引号时，Eclipse会自动提供配对的符号，并将光标置于符号对之内。

4·The open-parenthesis is followed by an optional argument list.

开括号后面跟着一个可选的参数列表。