security portal安全门: emergency exit户: one-panelled door; door门户网站: portal website; web portals语音门户网站: voice portals政府门户网站: government portal下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:安全门户网站,即可在微信中查询翻译