be over the moon : be very happy非常高兴和疯狂的Chris HAS proposed . I am over the moon！Jason passed the exam after 3 months ' study finally，he was over the moon！I ' ve been over the moon ever since I got engaged-I just can ' t stop looking at my ring！Once in a blue moon: rarely《蓝门》，千年相遇，极为罕见的情景Where have you been lately？I only see you once in a blue moon！Although I trust in god，I visit that famous temple only once in a blue moon . my dad is working in Scotland he visits home once in a blue moon Every coups兼职bob broke his employment agreement by moon light ing as a taxi driver . you ' ll lose your job if the boss finds out you ' ve been moonlight ining When