emergency trapdoor紧急: urgent; pressing; critical; ...活: live活板门: trap door; trapdoor侧面活板门: side exit吊门，活板门。: flap door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:紧急活板门，即可在微信中查询翻译
