heavy hour

例句：

1. 1. It's a heavy hour when the weather forecast is wrong.
   天气预报错误时，这是个重要的时刻。
2. 2. He decided to take a break during the heaviest hour of the day.
   在一天中最忙碌的时刻，他决定休息一下。
3. 3. The team worked tirelessly during the heaviest hour of construction.
   在建筑最繁忙的时候，团队努力不懈地工作。