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Many car engines are cooled by water. 許多汽車發(fā)動機都是用水冷卻的。
The fuel burner of an open - hearth furnace is water - cool, as is the valve that regulates the flow of air and waste gases. 平爐的燃料燃燒室是用水冷卻的，控制空氣和廢氣的閥也是水冷的。