系统内的空气可能妨碍水的正常循环，可能导致运行噪声发生。
Air in the system can prevent proper circulation of water and may cause noisy operation.
包括保持气道通畅、增加通气、维持正常循环、保暖、减少氧耗及复苏后的密切监护。
Maintaining airway open, increasing ventilation and normal cycle, keeping warm and reducing oxygen consumption, close monitoring after recovery.
救护车迅速把他送往医院，医护人员在车上对他实施了心肺复苏，使血液和氧气正常循环。
An ambulance sped him to the hospital while a paramedic administered CPR to keep blood and oxygen flowing.
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