fluid

名词 fluid:

a substance that is fluid at room temperature and pressure

a continuous amorphous substance that tends to flow and to conform to the outline of its container: a liquid or a gas

形容词 fluid:

subject to change; variable

同义词：unstable

characteristic of a fluid; capable of flowing and easily changing shape

同义词：runny

smooth and unconstrained in movement

in cash or easily convertible to cash

同义词：liquid

affording change (especially in social status)

同义词：mobile