Boss: That's right, this is the dead line!

老板：当然了！这是底线！

Today is the dead line, but I still have a lot to do.

今天是最后期限了，可是我还有很多事情没做。

He proposed that we (should) set a dead line for the complement of the plan.

他提议拟定一个执行计划的期限。

They did the project at a snail's pace and only half of it finished when the dead line came.

他们的工程做得很慢，截止日期到了，但是只完成了一半。

If the pats cannot finished before dead line even by changing the working schedule, should apply ahead.

在调整生产计划仍无法确保货期时，应提前申请。