joyousness

n.

快乐，使人喜悦；

1. There was something in the clear, pine-scented air of that winter morning that seemed to bring him back to his joyousness and his ardour for life.
   冬日早晨的空气非常清澈，含有松树的芬芳，使他重又高兴起来，恢复了对生活的热情。

Joyousness; Impromptu caprice /
Aim for joyousness at graduation time
Henderson's flowering bulbs bring the joyousness of springtime to your garden
Henderson's flowering bulbs bring the joyousness of springtime to your garden : autumn 1936.
’[A]s if She Defied the World in her Joyousness’: Rereading Darwin on Emotion and Emotional Development
“That Paradox of Unjoyful Joyousness” or Pure and Impure History: Retrospection and the Past in Robert Penn Warren’s A Place to C...
Regrouping, with care With experience, a touch of zeal, and a belief in joyousness, CEO takes on tough task
The May Queen. Cantata in Three Parts. Part First Represents the May Queen full of joyousness and hope on the eve of May Day