提供充足的个人防护设备是一项特别紧急的需要。
Provision of adequate personal protective equipment is a particularly urgent need.
当情况特别紧急，无法实施点火解围和冲越火线避险时，应选择就地卧倒避险。
When the situation is particularly urgent, can not rescue the implementation of the ignition and the red line of fire more hedging, the hedge should be selected place to lie down.
如果已存在的需求不是重要的或者这至少不是特别紧急的，我们可以推迟或者去除这个需求来为新的需求在时间进度和预算上腾出空间。
If an existing requirement wasn't important, or at least wasn't time-critical, we'd defer or remove it to make room for a new feature in the schedule and budget.
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