buoyant
01
cheerful and lively in spirit
例子
She remained buoyant despite the stressful day at work.
His buoyant attitude lifted everyone's spirits.
02
capable of floating on a liquid or rising in air or gas
例子
The life jacket kept the swimmer buoyant in the water.
Foam is naturally buoyant and is used in flotation devices.
词汇树
buoyantly
buoyant
buoy
