able or tending to keep afloat or rise to the top of a liquid or gas 能浮起的 ■(of a liquid or gas) able to keep something afloat (液体或气体)有浮力的 ■(figurative)(of an economy, business, or market) involving or engaged in much activity (喻)(经济、生意或市场)有活力的,繁荣的 car sales were buoyant. 汽车销售如火如荼。 ■(figurative)cheerful and optimistic (喻)轻松愉快的,乐观的 the conference ended with the party in a buoyant mood. 会议结束时该党气氛欢快。
派生 buoyantly adverb 语源
late 16th cent.: from French bouyant or Spanish boyante, present participle of boyar 'to float' (see buoy)