radiator drain

例句：

1. 1. The car's radiator drain is clogged, causing the engine to overheat.
   汽车的散热器排水口堵塞了，导致发动机过热。
2. 2. The mechanic replaced the radiator drain and fixed the problem.
   机械师更换了散热器排水并解决了问题。
3. 3. To prevent future problems, it's important to regularly check and clean the radiator drain.
   为了预防未来的问题，定期检查和清洁散热器排水是很重要的。