The cooling medium, or coolant, in them is either water or some low-freezing liquid, called antifreeze.
2
大多数的现代油罐车冷却系统利用散热器冷却剂——这是某种类型的液体-保持汽车温度在一定的水平上。
Most of the modern car cooling systems make use of the radiator coolant - which is a certain type of liquid - to keep the car temperature at a certain level.
3
不幸的是,这也意味着车主均需以前的步骤要等到他们不能看见泡沫即将推出散热器冷却剂。
Unfortunately, this also means that the car owners will have to perform the previous steps again until they cannot see bubbles coming out with the radiator coolant.