time of impact

例句：

1. 1. The project's time of impact is crucial for its success.
   该项目的影响时间对其成功至关重要。
2. 2. The new policy will have a significant impact on the economy.
   新政策将对经济产生重大影响。
3. 3. The scientist's findings had a profound impact on the field.
   科学家的发现对这一领域产生了深远的影响。