1·This matters because the price of a given drug falls by more than 85% within a year of patent expiry in competitive markets like the United States.
之所以强调这一点，是因为在美国这样的竞争市场中，某一种药品的价格在专利到期的一年中下滑幅度超过了85%。
2·Policy: The policy defines the attributes such as priority and expiry date for each operation.
策略：策略定义每种操作的诸如优先级、到期日期之类的属性。
3·Typically, this would involve considerations such as when a password was last changed, when it is due for expiry, and any password flags set for each user.
通常，要考虑的因素包括每个用户最后一次修改密码的时间、密码应该到期的时间和密码标志。
4·You can see from the above output that the number of weeks before password expiry is 4.
在上面的输出中可以看到密码到期之前的周数是 4。
5·A timer handling routine is called to process the retransmission timer expiry.
调用一个计时器处理例程以处理重新传输计时器的计时到期。