buoyant
adjective uk/ˈbɔɪ.ənt/ us/ˈbɔɪ.ənt/
(FLOATING)
能浮起的
able to float
Cork is light and buoyant. 软木质轻，可浮在水上。
(HAPPY)
欢欣鼓舞的;轻松愉快的
happy and confident
After reading the letter he was in a buoyant mood. 读了信后，他高兴得快要飘起来了。
(SUCCESSFUL)
成功的;有利可图的
successful or making a profit
The housing market remains buoyant. 房屋市场依旧是有赚头的。