形容词

名词

1. 液体;流质
A fluid is a liquid.

2. (动作、线条或设计)流畅优美的，优雅自然的
Fluid movements or lines or designs are smooth and graceful.

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

2. a substance that is fluid at room temperature and pressure