劍橋詞典[ 可數(shù)名詞：有複數(shù)形式的名詞 ] mainly US (UK usually open day) a day when an organization such as a school , college , or factory allows members of the public to go in and see what happens there （學校、大學、工廠等接受公衆(zhòng)蓡觀的）接待日，開放日 [ 可數(shù)名詞：有複數(shù)形式的名詞 ] a time when a house or apartment that is being sold can be looked at by the public （爲房屋出售設的）看房時間 [ 不可數(shù)或單數(shù)名詞：沒有複數(shù)形式的名詞 or 單數(shù)名詞 ] UK a situation in which people welcome visitors at any time 隨時開放；隨時歡迎來客 We keep open house , so come and see us any time . 我們隨時歡迎來訪，什麼時候來看我們都行。 返回 open house