1. 流体的；流动的　having the quality of flowing, like liquids, air etc.
2. 易变的，不固定的　unsettled, not fixed

　～ diet　流质食物
　～ plans　易变的计划

　Water is a fluid substance.　水是流体。
　Well, we have not enough fluid capital.　可是，我们没有足够的流动资金。
　The weather is fluid in summer.　夏天天气多变。
　Keep your plans fluid until we decide what we're going to do.　在我们决定怎么办之前，不要把计划定得太死。

C U 液体，流体 a liquid

　drink ～s　喝流汁
　force ～s　挤出流体
　measure ～s　测量流体
　clear ～s　清澈的流体
　body ～s　体液

　Some fluid was flowing from the tree.　一些液体正从树里流出来。
　The little boy is taking cold fluids.　那个小男孩正在喝冷饮。

　［同义词］ adj. adaptable, changeable, liquid, watery
　［反义词］ adj. fixed, hard, settled, solid
　［词源］拉丁语fluere（流动）