cloud nine n.
[俚]极乐心境,狂喜状态
cloud nine[ noun ]
a state of extreme happiness
<noun.state>
cloud nine \cloud" nine"\, cloud-nine \cloud"-nine"\n.
a state of extreme or perfect happiness; used especially in
the phrase on cloud nine.
Syn: bliss, blissfulness, seventh-heaven.
[WordNet 1.5 +PJC]