正则表达式提取器提取转义字符，\用\\匹
( ) -these enclose the portion of the match string to be returned
^ a 以a开头，b$ 以b结尾
[^"] - means match anything except "
注意不要有空格
一些软件的快捷键会相互冲突，比如plsql和有道词典
