radiator draw-off plug

例句：

1. 1. The car has a radiator that needs to be replaced soon.
   这辆车有一个需要很快更换的散热器。
2. 2.The old house had a small radiator in the basement.
   那所旧房子地下室有个小散热器。
3. 3. The engineer checked the radiator temperature before starting the engine.
   工程师在启动发动机前检查了散热器温度。