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1.The pressure-air system is designed to provide a comfortable environment for the passengers.
这个压气系统设计用来为乘客提供一个舒适的环境。
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2.The pilot was instructed to maintain a safe altitude while maintaining pressure-air.
飞行员被指示在保持安全高度的同时维持压气。
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3.The airship's pressure-air tanks were filled with fresh oxygen.
飞艇的压气罐被填充了新鲜的氧气。