buoyant

buoyant
adjective
  1. 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
  1. late 16th cent.: from French bouyant or Spanish boyante, present participle of boyar 'to float' (see buoy)
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