retrofire time

例句：

1. 1. The chef needs to ensure that the food is cooked to the correct retrofire time before serving.
   厨师需要确保食物在正确的回火时间内煮熟后才能上桌。
2. 2. During the retrofire time, the machine should be turned off and left unattended.
   在回火时间内，机器应该关闭并留人看管。
3. 3. The engineers were instructed to check the retrofire time of the new engine before starting the test run.
   工程师们被指示在开始试运行之前检查新引擎的回火时间。