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- 我们应该使用无烟煤以防止空气污染。
We should use anthracite to avoid air pollution.
- 他打开窗户,放出污浊的空气。
He opened the window to let out the foul air.
- 空气中烟雾弥漫。
The air was thick with smoke.
- 新鲜空气有益于健康。
Fresh air is beneficial to our health.
- 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.
- 空气是气体的混合物。
Air is a mixture of gases.
- 新鲜空气和运动有益于健康。
Fresh air and exercise are good for the health.
- 打开窗户,让新鲜的空气进来。
Open the window and let in some fresh air.
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