I was full of joy at the thought of seeing my best friend again.

一想到要能再次与我最好的朋友见面，我就满心欢喜。

Full of joy he took it to the king and expected that he would grant him the promised reward.

他满心欢喜地把它拿给国王，希望国王会授给他许诺的奖赏。

Life is a tragedy full of joy.

人生是一场充满快乐的悲剧。

Is life here full of joy?

这里的生活充满欢乐吗？

He saw his girl friend, full of joy.

看到女朋友，他满心欢喜。