音標發(fā)音英式音標 [???.p?n ?de?]美式音標 [?o?.p?n ?de?]英式發(fā)音 美式發(fā)音 基本解釋（學校、大學、工廠等接受公眾參觀的）接待日，開放日。同根派生 open day相關詞英英字典劍橋英英字典 a day when an organization such as a school, college, or factory allows members of the public to go in and see what happens thereopen day劍橋字典open day柯林斯字典