open day的复数形式为：open days...

n.接待日，可参观的日子...

open day的音标：open day的英式发音音标为：['əupən dei]open day的美式发音音标为：['opən de]...

This same truth is a naked and open day light.“真理”这件东西可说是一种无隐无饰的白昼之光.Next Saturday will be Open Day of Rose Garden School.下星期六将是玫瑰花园学校的开学.Joey and Jordan made fruit tarts at Open Day.两个小厨师,学校开放日做水果挞....