延迟午夜的最后期限是根本不可能的。
It is totally out of the question to postpone the midnight deadline.
由于种种原因，性能测试常被延迟到开发周期的后期。
Performance testing is usually put off until later cycles for a variety of reasons.
例如，如图1所示，一个提醒警报在里程碑日期前7天生成，另外3个延迟警报分别在里程碑最后期限之后的第1、3、和7天生成。
For example, as shown in Figure 1, a reminder alert occurs 7 days before the milestone date, and three late alerts occur 1, 3, and 7 days respectively after the milestone deadline.
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