nitroretard

例句：

1. 1. The car's engine is nitroretarded for safety reasons.
   为了安全原因，汽车的引擎被减慢了。
2. 2.The scientist used a nitroretard to slow down the reaction.
   科学家使用一种缓化剂来减缓反应速度。
3. 3. The project was delayed due to unexpected technical issues.
   由于技术问题意外发生，该项目被推迟了。