Oh I am really overjoy to see you again .

哦再见到您我真是万分高兴。

Overjoy or be happy with sth.

狂喜或为某事而高兴。

She is overjoy to hear about the arrival of the baby .

她听说婴儿出生而欣喜若狂。

Overjoy in my heart , I carried the three blades back to second flor .

得意洋洋的，我扛着三把条子，又回到二楼。

Knowing that he will be sent to study abroad , he is overjoy .

得知他即将被派往国外学习，他非常兴奋。