Trying to apply new methods to projects that have established deadlines is difficult, and often impossible.
在确定了最终期限的项目中运用新的方法是相当困难的，通常是不可能的。
Donor anonymity means it is often impossible to get medical details that would be useful for the child.
捐赠者匿名也就意味着不可能获得有利于小孩的医疗详细信息。
It adds a significant cost to operating a business, and this cost is often impossible to quantify at the outset.
它明显地增加了开店的成本，但这些成本又无法在开始时确定。
The demand for accommodation is so great that it is often impossible for ordinary people to buy a house of their own.
由于住房的需求非常大，普通人常常不可能买到真正属于自己的住房。
Rules concerning corporate governance or the environment are often impossible to understand, yet breaking them can land you in prison.
那些关于公司管理的法规经常是难以理解的，但触犯了任何一条都能送你进监狱。
Recovery from spinal cord injuries is often impossible because of the formation of scar tissue, which impedes the growth of new nerves.
他们说，这种药物看来能够除去通常阻止受伤神经细胞重生轴突的障碍。
However, it is often impossible for ordinary manufacturers to provide the professional measurement conditions, such as an EMI receiver.
对于一般的生产厂商而言，难以具备EMI接收机等测试条件。
Especially, accurate restoral of sources waveform is often impossible when there are Gaussian noise or modulatory sources in sensor measurement.
特别是，当传感观测中存在高斯噪声或调制源时，往往无法获得准确的源波形恢复。
On the physically demanding and entertainment intensive court-scape of the NBA, it's often impossible to distinguish between swagger and stagger.
在NBA里对身体的需求以及球场上的娱乐性，似乎在狂妄自大和蹒跚而行之间很难辨别清楚。
At the same time, we ask humans to perform what are often impossible monitoring or backup tasks and then blame them when the inevitable accidents occur.
同时，我们还让人类去做那些通常是不可能的监控和备份的工作，然后在不可避免的事故发生的时候把责任归咎于他们。
For instance, it makes sense to cache map data to reduce response time, but it's often impossible or impractical to cache results of search queries or real-time traffic information.
比如，可以缓存地图数据来减少响应时间，但通常并不适合将搜索查询结果或者实时交通信息进行缓存。
Tragedy exists because at the root of the human heart there is a enduring kindness that must struggle and conquer external events, and a reality that is often impossible to defeat.
悲剧的存在是因为人类心灵的深处有不朽的仁慈，必须经历长期的斗争和善良来征服外力，而现实往往无法打败。
It is often impossible to determine if human-to-human transmission has occurred since the family members are exposed to the same animal and environmental sources as well as to one another.
这往往很难确定是否发生了人际传播，因为家庭成员都暴露于同样的动物和环境来源并且彼此接触。
It's impossible. All the ski runs are carefully marked.And if there is something that might be dangerous, like a cliff or something, then they often put a fence around it.
不要担心那个。那是不可能的。所有的滑雪道都有清楚地标示出来。而且如果有什么危险的。像是悬崖或什么的。他们通常会在附近围上栅栏的。
This means that if you often tell yourself that it is difficult or impossible to acquire money, the subconscious mind will accept your words and put obstacles in your way.
这就是说，如果你经常对自己说：很难、不可能赚到钱，你的潜意识就会接受到这种想法，并在你的前进的道路上设置障碍。
An exception is if you can show it can't happen — but often programs are changed over time that make the impossible possible.
能够容易看出来的异常就不可能会发生——但是程序通常会随时间而变更，从而使得不可能成为可能。
He did not set any particular mark on the house, but examined and observed it so carefully, by passing often by it, that it was impossible for him to mistake it.
他没有设置任何特殊的记号在房子上，而是非常仔细的检查和观察他，凭借房子旁边的信息，他不可能再弄错了。
Putting these together has often proved difficult to the point of impossible: witness the UN climate talks.
要把这些事都促成通常很难，甚至可谓不可能：看看UN的气候谈判便知。
People whose fingerprints have worn off because of burns or overuse often find that the smooth calluses that develop on the fingertips make it nearly impossible to maintain a grip on anything.
那些由于灼伤或是过度使用双手而导致指纹磨损的人常常感觉表皮光滑的指尖要抓紧任何东西几乎不太可能。
This is limiting as it requires the alteration of a document about which the claim is being made — often undesirable, and if the document format isn't RDF, impossible.
这是有限制的，因为它需要对文档的有关声明是怎么产生的进行改动，这常常是不合需要的，而且如果文档格式不是RDF，则不可能发生改动。
Besides, finding witnesses willing to speak and assembling sufficient evidence are often virtually impossible in such chaos.
而且，在被派驻国混乱的局势里，几乎不可能找到愿意出庭的证人或是搜集到充分证据定罪。
For example, female commentators tend to be poorly received by male soccer fans, who often believe that it's impossible for a woman to truly understand soccer.
例如，男球迷们很难接受女性评论员，他们坚信女性无法真正了解足球。
Scratch a teacher or an administrator (or a parent), and you often hear that it is impossible to get the best teachers without paying big salaries;
随便抓一个老师或者校长（或者一个家长），你都会听到他们说没有好的待遇怎么可能得到最好的老师呢。
But the winds cannot be denied, bringing as they often do a future that is impossible to ignore.
但是不管什么样的风，人们是无法拒绝的，随之带来的还有让人无法忽视的未来。
Sometimes it will mean doing inconvenient, unpopular, costly, or seemingly impossible tasks. It will often mean doing the opposite of what you feel like doing.
有时可能是叫你去做一些不方便、不受欢迎、要付代价，或似乎是无法达成的任务，往往这些都是你觉得不喜欢做的事。
This shift occurred was when I was finally able to let go of my eating disorder. We often hold ourselves to impossible standards and end up feeling bad.
这种转变是在我最终摆脱饮食失调后才发生的。我们常常给自己套上了难以企及的高标准，最终又以糟糕的情绪结束。
Perfectionists often get caught in the endless cycle of regret and blame that makes it difficult, if not impossible, to move on from their mistakes.
完美主义者常常会由于不能或者很难纠正自己的错误而陷于无休止的悔恨和自责中。
Market gurus and other students of misaligned stock, bond or home prices often say that although it is easy to spot an asset-price bubble, it is impossible to know the event that finally pricks it.
市场权威和股票、债券或住房研究者们通常认为，识别价格泡沫并非难事，但却很难料知最终刺破泡沫的具体事件。
Market gurus and other students of misaligned stock, bond or home prices often say that although it is easy to spot an asset-price bubble, it is impossible to know the event that finally pricks it.
市场权威和股票、债券或住房研究者们通常认为，识别价格泡沫并非难事，但却很难料知最终刺破泡沫的具体事件。
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