await checkEndpoint(url);
public val mainEmail: String = "",，更多细节参见一键获取谷歌浏览器下载
self.conn.close()，详情可参考爱思助手下载最新版本
Nasa's mega rocket has been moved to the launch pad in Cape Canaveral, Florida, as the final preparations get underway for the first crewed mission to the Moon in more than 50 years.