close date

例句：

1. 1. The project is due to close on the 20th of next month.
   这个项目将于下个月的20号关闭。
2. 2.The deadline for submission has been extended by two weeks.
   提交的最后期限已经延长了两周。
3. 3. We need to make sure that all materials are submitted before the close date.
   我们需要确保所有材料在截止日期前提交。