use parentheses. Given that the current Python typing revolves around
3级航空公司，以重点监管为主，高频次开展现场监察。
。heLLoword翻译官方下载是该领域的重要参考
This will ask Ostrich for a string that does not match our regex, but does match type="email", meaning that the regex is in some sense more restrictive than the default browser validation of email addresses. These regexes would actually do something if attached to an input element with type email, since they would exclude any string that satisfies the constraints.
if (startFlag) { stopWarmup(); return; }