This is one reason why car manufacturers provide a valve to throw the air away from the car engine cooling system.
这是原因之一，汽车制造商提供一个阀门，把空气离开汽车发动机冷却系统。
This is to free the air bubbles from the car engine cooling system.
这是自由的空气泡从汽车发动机冷却系统。
If there happens to be air bubbles in their engine cooling system, it may cause their cars to malfunction.
如果刚好气泡在发动机冷却系统，这可能会引起他们的汽车故障。
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