Login sessions expire for two reasons.
注册会议为二个原因到期。
But first, this Congress needs to restore the unemployment insurance you just let expire for 1.6 million people.
但首先，国会要重新启动失业保险，现在已经有160万美国人失去了这项保障。
With the Kyoto protocol due to expire in 2012, negotiations for a new treaty to fight global warming have foundered amid disagreements over how to share reductions in carbon emissions.
京都议定书将在2012年到期，而为达成一项防止全球变暖的新协议而展开的谈判却因各方在削减碳排放的配额问题上意见不同而遭受。
The budget does make the case for extending his existing tax cuts beyond 2010, the year in which, under current law, they all expire.
该预算的确把减税计划展期到了2010年以后，不过，按照现行法律，这些项目到2010年也都到期了。
A tariff on ethanol imports and a tax credit for blenders are due to expire in december-these should be renewed, lobbyists insist.
乙醇进口的关税表和混合器的课税扣除十二月即将到期—这些都应该被更新，说客们坚持。
With the timing of a change to the peg so uncertain, are there ways to wait for a payday other than buying options that may expire worthless?
在联系汇率制度结束的时间如此不确定的情况下，除买进到期时可能一钱不值的期权外，是否还有其他可以获利的办法？
A federal tax credit for wind has been allowed to expire three times in recent years.
联邦税额减免优惠在最近几年中已被三次允许期满无效。
This is an important consideration to keep in mind because it means that your backups will not expire and you'll need to devise a plan for handling this.
这一点很重要，因为它意味着您的备份不会过期，因此需要制定一个计划来处理这种情况。
One: we've got to extend the tax cuts for the middle class that are set to expire at the end of the month.
其一：我们必须延续年末即将到期的对中产阶级的减税政策。
Since the maximum value (tmax) for the AIX TCP RTO is 64 seconds, this is large enough to ensure that all retransmission timers in a slot expire at the same time and not in the subsequent cycles.
因为AIXTCPRTO的最大值(tmax)是64秒，所以这个值足够大，可以确保在一个槽位中所有的重新传输计时器同时计时到期，而不需要等到后继的周期。
The pre-mid-term gridlock means that even an extension of George Bush junior’s tax cuts, which expire this year, is not assured, even for America’s middle class.
种种障碍都表明，即使想延长小布什时期的减税政策（将于今年到期）也是十分困难的，就连美国的中产阶级都很难接受。
The pre-mid-term gridlock means that even an extension of George Bush junior's tax cuts, which expire this year, is not assured, even for America's middle class.
种种障碍都表明，即使想延长小布什时期的减税政策（将于今年到期）也是十分困难的，就连美国的中产阶级都很难接受。
There are also reports he may propose allowing existing tax breaks for families making more than $250, 000 a year to expire, effectively raising tax rates to generate revenue.
也有报告说，奥巴马可能提出，让年收入超过25万美元的家庭的减税政策到期，从而有效地提高税率，增加财政收入。
He also hopes Congress will extend tax credits for home buyers due to expire at the end of November.
他还希望国会能够延长定于11月底到期的房屋购买者税收减免。
The browser can safely not check for new versions until the expire date has passed. Setting this up in Apache is easy.
这个Expires HTTP头包含页面过期的时间，这样就可以避免浏览器在页面过期时间之前发送版本检查的请求。
Extended unemployment-insurance benefits, for instance, expire on November 30th, and Mr Obama's "making work pay" tax credit on December 31st.
比如说范围扩展的失业保险救济金计划将于11月30日过期，奥巴马先生提出的“劳有所得”税收减免计划将于12月31日过期。
Messages remain in the mail database for the period that soft deletes are set (by default, messages are set to expire after 48 hours).
在软删除所设置的一段时间内(默认情况下，消息设置为48小时以后过期)邮件仍旧保存在邮件数据库中。
Conditions specify exceptions that, if true, expire the permissions, and renegotiation may be required (for example, if the credit card expires, then all permissions are withdrawn to play the video).
Condition指定如有例外，就让权限过期无效，可能需要重新进行协商(比如，如果信用卡过期了，就会收回播放视频的所有权限)。
But it assumes no additional spending for wars in Iraq and Afghanistan after next year and allows many of the President's record tax cuts to expire.
不过，这个预算没有假定明年之后再为伊拉克和阿富汗战争追加经费，同时也使许多布什实行的创记录的减税项目期满作废。
No, you may take as long as you need to complete the CFA program; your exam results never expire; and we don't limit the number of times you can sit for each exam level.
不需要。你可以在任何你完成CFA项目所需要的时间内报考(各等级)，你(已通过等级)的考试成绩都不会失效，而且我们不限定你每个等级的报考次数。
Many worker threads can suddenly block and wait for some timeout to expire; in the meantime however, new work arrives to the server.
很多工作线程可能会突然阻塞，并等待超时过期，不过同时又有新工作送到服务器。
Leading managers have low salaries and often let stock options expire even when they are in the money, which suggests that rewards are not closely tied to creating value for shareholders.
主要的经理人工资不高，而且经常不行使期权，即使当期权实值时。这表明奖励并不与为股东创造的价值紧密相关。
Recently officials have suggested extending the payroll tax cut agreed on last December, which is due to expire at the end of 2011, for a year.
最近，高级官员已经建议延长去年十二月达成协议的一年的工资税削减计划。因为这个计划将于2011年底满期。
Mr Johanns will soon unveil his proposals for replacing today's farm programmes, which expire this year, with better ways to nurture cultivators.
目前的农业谈判框架将在年内到期，不过约翰斯将很快拿出接替的新提案，以更好的方式资助农场主。
So, for the cleaning man's sake, you should expire of natural causes in a bathroom and be found quickly?
所以说，为了清洁工方便，你最好是自然死亡，在快断气的时候跑到浴室里等死，并让尸体尽快被发现？
Also, though there are often coupons available for online vendors like FTD, most coupons for Valentine-y arrangements expire in early February.
然而，像FTD这样的网上供应商常常会提供一些优惠券，其中很多是为情人节准备的，到二月初过期。
The gap is so small for many unemployed people that studies show that they do not begin a serious job hunt until their unemployment benefits are about to expire.
两者差距如此之小，以至于研究显示，许多失业人口在救济期间届满前是不会去正经找工作的。
The gap is so small for many unemployed people that studies show that they do not begin a serious job hunt until their unemployment benefits are about to expire.
两者差距如此之小，以至于研究显示，许多失业人口在救济期间届满前是不会去正经找工作的。
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