open day 的英语意思
open dayˈopen day noun [countable] British English 
查看全部语言翻译 a day when a school or an organization invites the public to come in and see the work that is done there（学校或机构举办的）开放日，公众可前往参观其工作情况
查看全部语言翻译 a day when a school or an organization invites the public to come in and see the work that is done there（学校或机构举办的）开放日，公众可前往参观其工作情况