delay variation

例句：

1. 1. The delay in the project's completion has caused significant delays in the delivery schedule.
   项目的延期导致了交付时间表的严重延误。
2. 2. The genetic variation between different species is a key factor in evolution.
   不同物种之间的遗传变异是进化的关键因素。
3. 3. Due to the delay in communication, we were unable to make the necessary adjustments before thedeadline.
   由于沟通延误，我们在截止日期前未能做出必要的调整。