retardment

例句：

1. 1. The delay in the project has caused significant problems.
   项目的延迟导致了严重的问题。
2. 2.The teacher's explanation helped to clarify the concepts for the students.
   老师的讲解帮助学生们澄清了概念。
3. 3. The delay in transportation has made it difficult for us to meet our deadline.
   交通的延误使我们难以按时完成任务。