Sometimes that standard is quite difficult, if not impossible, to achieve.
有时那个标准，即使并非不可能，也是很难达到的。
That lack of curiosity produces a relative lack of knowledge, and the lack of knowledge is difficult if not impossible to compensate for later on.
好奇心的缺乏导致了相应知识不足，而知识的缺乏即便可以弥补，但真正做到也是很难的。
It is extremely hard if not impossible to get intimate with the subject.
要和被摄对象变得亲近几乎是不可能的。
Replacement is difficult if not impossible.
更换很困难甚至不可能。
Or, if not impossible, at least impossible at the present time.
即使并非完全不可能知道，至少在目前不可能。
This is a passive approach and is difficult, if not impossible, to react to errors.
这是一种被动式方法，并且很难(如果不是不可能的话)对错误作出反应。
This kind of interactivity is difficult, if not impossible, to achieve using bitmaps alone.
仅使用位图很难实现这种类型的交互性，甚至不可能实现。
This makes generically identifying object and class structures difficult, if not impossible.
这可能会使标识对象和类结构变得很困难。
However, the hectic schedules of Chinese high school students make this very difficult, if not impossible.
但是，在中国高中生紧张的课程安排下参加两个考试是非常不现实的。
While it might be easy to change the software, changing the hardware is often difficult, if not impossible.
相对于硬件来说，改变软件更加的容易。
If the markets behavior were truly random, then it would be difficult if not impossible to create consistency.
如果市场的行为真的是随机的，那么产生持续一致性真的很难。
Indeed, important military shifts have already been set in motion that will be difficult if not impossible to reverse.
确实，军事上的重要改变已经在发生，要逆转这样的趋势，如果不是不可能的话，起码也是很困难的。
Funding can be unpredictable, short-lived, or inflexible, making it difficult, if not impossible, to launch long-term plans.
供资不可预测、短暂，或不灵活，因此即使不是不可能，至少也很难启动长期计划。
Success is less due to an individual's effort, and measurement of individual effort becomes more complex, if not impossible.
成功对个人努力的依赖降低了，而衡量个人努力即使有可能，也变得更加复杂。
Such fruitful results would be difficult, if not impossible, to achieve without the speed enabled by agile development processes.
如果没有敏捷开发流程提供的速度，这样丰硕的成果将很难或不可能实现。
It is hard, if not impossible, to imagine exactly what it would be - such is the nature of paradigm shifts, they cannot be predicted.
准确地设想，即使并非不可能，也是很困难的——这就是范型变化的自然特性，它们无法被预测。
Business environments, like ecosystems, can be fragile-and once lost, competitive advantage can be hard, if not impossible, to regain.
商业环境和生态环境一样很脆弱，一旦失去竞争优势，即使不是完全不可能，但也很难重新获得。
As in most forming processes, use of undercuts should be avoided as these will make the removal of the part difficult, if not impossible.
如同大多数成型工艺，如果不是非用不可，尽量避免采用凹槽，因为凹槽会使零件难以取出。
It is very difficult, if not impossible, for the consumer to find out the quality of chocolates by just looking at their appearance in the shop.
消费者即便有可能，也很难在店里仅凭巧克力的外表来判断它们的质量。
Ventilators make it difficult -- if not impossible -- for them to communicate their needs, or ask questions about their treatment or survival chances.
机械通风设备使他们难于（即使并非不可能）表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
Ventilators make it difficult — if not impossible — for them to communicate their needs, or ask questions about their treatment or survival chances.Dr.
机械通风设备使他们难于(即使并非不可能)表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
Ventilators make it difficult — if not impossible — for them to communicate their needs, or ask questions about their treatment or survival chances. Dr.
机械通风设备使他们难于(即使并非不可能)表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
America's Supreme Court is about to issue a ruling which, by all accounts, will make it difficult, if not impossible, to get a patent for a business process.
美国最高法院即将做出裁决，一般来说要想获得商业方法方面的专利，即便不是完全不可能，也将极其艰难。
There is usually considerable value in documenting the architecture — otherwise it is difficult (if not impossible) to prove that it meets the stated requirements.
记录体系架构通常十分有价值——否则的话我们很难(如果不是不可能的话)证明它满足一定的需求。
When people have to pay for care, they tend to wait until a condition is so far advanced that treatment is difficult, if not impossible, and the costs are much higher.
如果必须为医疗自掏腰包，人们有时会错失良机，等病情过于严重时才去就医，而那时已很难治疗，有的甚至为时过晚，费用也高得多。
It makes PCs harder - if not impossible - to upgrade, and it means if one component breaks - a graphic card, or the display - the whole thing's got to be hauled in to repair.
一体机的设计使得PC很难升级，而且意味着如果其中一个组件损坏，比如显卡或显示器，整个电脑都要被拖去修理。
The presence of homoclinic tangencies and homoclinic intersection makes it difficult if not impossible, to denoise or shadow the trajectory of a non-hyperbolic nonlinear system.
非双曲线型非线性系统同宿切面点和同宿横截点的存在，使得其时间序列的去噪或轨迹重影变得十分困难。
The presence of homoclinic tangencies and homoclinic intersection makes it difficult if not impossible, to denoise or shadow the trajectory of a non-hyperbolic nonlinear system.
非双曲线型非线性系统同宿切面点和同宿横截点的存在，使得其时间序列的去噪或轨迹重影变得十分困难。
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