The radioactive debris is produced when the core is exposed above the coolant water level and overheats.
当核心暴露于冷却水位以上并过热，那放射性碎片就会产生。
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.
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。
COOLANT LEVETL: in newer cars look at the level markings on the overflow tank next to the engine.
冷却液位：如果是新车，只需查看发动机旁溢流箱上液位标志。
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