dead motor

例句：

1. 1. The old car's engine was so worn out that it needed to be replaced with a new one.
   这辆旧车引擎磨损严重，需要更换新的。
2. 2. The old machine had been dead for years and was finally discarded.
   这台旧机器已经报废多年，最终被丢弃了。
3. 3.The company decided to replace the dead motor with a more efficient model.
   公司决定用更高效的模型替换掉这个报废的电机。