fluid

fluid
noun
  1. a substance that has no fixed shape and yields easily to external pressure; a gas or (especially) a liquid
    流体；气体，液体（尤指液体）
    drink a litre of fluid a day.
    每天喝一升液体。
    [count noun]a cleaning fluid.
    去污液。
adjective
  1. (of a substance) able to flow easily
    （物质）能流动的，易流动的
    the paint is more fluid than tube watercolours.
    这种颜料比筒状水彩颜料更湿软。
    a fluid medium.
    流动介质。
    ■not settled or stable; likely or able to change
    不固定的，不稳定的，易变的
    our plans are still fluid.
    我们的计划还没定死。
    the fluid political situation of the 1930s.
    20世纪30年代不稳定的政治局势。
    ■smoothly elegant or graceful
    优美的，流畅的
    her movements were fluid and beautiful to watch.
    她的动作流畅优美。
    ■(of a clutch or coupling) using a liquid to transmit power
    （离合器，联轴节）液体传力的，液力的
派生
fluidity
noun
fluidly
adverb
语源
  1. late Middle English (as an adjective): from French fluide or Latin fluidus, from fluere 'to flow'
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