Of definite shape and volume ; not liquid or gaseous.

空气,无论是 气态 的还是液态的,都是一种流体.

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Gases have neither definite size nor definite shape.

气体既无一定的体积,又无一定的形状.

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A solid is different from a liquid is that the solid has definite shape.

固体和液体不同点在于固体有一定的形状.

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A solid is different from a liquid in that the solid has definite shape.

固体和液体的不同在于固体有一定的形状.

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