Air is the gaseous state of matter whose characteristic is mobility.
空气是气态物质其特点是流动性。
Air whether in the gaseous or liquid state is a fluid.
空气，无论是气态的或是液态的，都是一种流体。
Air whether in the gaseous or liquid state is a fluid.
空气，无论是气态的还是液态的，都是一种流体。
Air whether in the gaseous or liquid state is a fluid.
空气，无论是气态的还是液态的，都是一种流体。
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