On average, students have to spend 3 hours finishing homework every day, but if we are stuck by difficult questions, the time will be extended.
学生平均每天要花三个小时来完成作业，但是如果遇到难题，完成作业的时间就得延长。
Life can be easy or difficult, sometimes it depends on how you look at it.
生活可以容易，也可以困难，有时这取决于你如何看待它。
The project is considered to be the most difficult, and now nobody knows how much will be spent on it.
人们认为这个项目是最困难的，目前没有人知道要花多少钱。
Fixing the problems will be difficult, but we can rapidly improve the information and guidance on offer.
完全解决问题是很困难的事情，但我们可以尽快地提供有关信息和指引。
Part of the reason negotiations are difficult is that people tend to be more negative on email.
邮件谈判出现困难的部分原因是人在邮件交流中心里有否定倾向。
That number might be difficult to raise on a cramped spaceship but could be more feasible than raising an equivalent number of chickens.
在狭窄的太空船上饲养这么多蚕可能有点儿困难，但相比喂养相同数量的鸡要切实可行多了。
Embedded targets are often resource-constrained, and it can be difficult to allocate resources to debug the application on the target.
嵌入式目标通常都是资源受限的，分配资源以调试目标上的程序可以变得十分困难。
Additionally, the other applications may be changing data on the backend resources, making repetitive tests difficult or impossible.
此外，其他应用程序可能在更改后端资源上的数据，这将增加重复测试的困难，甚至不可能进行。
Studies on the latter group would be difficult to conduct, but the GACVS encourages further research.
在这些婴儿中开展研究比较困难，但GACVS鼓励在这方面开展进一步的研究。
And while it wouldn't be difficult to get the ball rolling on this, it would be difficult to convince other content providers to abandon Apple and to switch to Sony's content platform instead.
索尼从苹果公司撤出自己的内容不难，要想说服其他内容提供商放弃苹果而转投索尼旗下的内容平台，非常困难。
Physicists, though I love them, can be among the most difficult scientists to to carry on a conversation with.
物理学家，虽然我喜欢他们，但他们却可以说是科学家中最难以交流的一群人。
It would not be difficult to improve on the graphics, like drawing the bars in 3d or using different colors.
对图形进行改进也不是很困难，您可以用3d效果绘制条形。或是使用不同的颜色。
I'm not going to have you work long hours on difficult problems to be submitted and then graded.
我的作业不会让你们花费大量的时间，去钻研很难的问题，然后交上来让我打分。
Early A.I. research concentrated on what seemed to be difficult intellectual tasks, such as playing grandmaster level chess, or proving theorems in integral calculus.
早期的人工智能研究集中在了一些看起来很困难的智力活动上，如高水平国际象棋，或者积分定理的证明。
This also provides you with an understanding of the data source, which may be easy or difficult to manage, depending on the form and period of time between updates.
这样还可以帮助您了解数据源；取决于更新的形式和更新之间的时间段，数据源的管理可能非常容易，也可能非常困难。
Even when firms agree on a common standard before going to market, negotiations can be difficult.
即使各个公司在上市之前支持共同的标准，协商也是很困难的。
If your design relies on humans to remember processes, compliance will be extremely difficult.
如果您的设计依赖人类记住流程，实现遵从性就会极其困难。
The likely answer is a little of both, but the question highlights how difficult it can be to have a perspective on what’s big and what’s small.
答案可能是这两种因素都有一点，但是这个问题突出显示了要区别什么是大什么是小这个问题有多难。
I. research concentrated on what seemed to be difficult intellectual tasks, such as playing grandmaster level chess, or proving theorems in integral calculus.
早期的人工智能研究集中在了一些看起来很困难的智力活动上，如高水平国际象棋，或者积分定理的证明。
Even a former top executive of one of the miners conceded that true competition on pricing would be difficult to foster, when the cost base was the same.
甚至连其中一家矿商的一位前任高管都承认，当成本基础相同时，将很难培育在定价上真正的竞争。
Note: This step may be difficult to carry out on a single system because of memory constraints.
注意：由于内存限制，这个步骤可能难以在单个系统上执行。
With the limit of 40 workers per project, 'it will be very difficult to make enough progress on projects, ' said Li Wei Wei, a Sepco translator who has helped colleagues deal with immigration issues.
山东电力基本建设总公司帮助同事处理移民事务的翻译李维维（音）说，有了每个项目外籍工人不得超过40人的限制，项目将很难取得足够的进展。
As compared to simply removing old files, this can be a more difficult undertaking depending on the environment complexity.
比起简单地删除旧文件，根据环境复杂度进行删除可能更加困难。
Accommodation on campus is limited so finding a place to live can be difficult.
大学校园中的宿舍位置有限，所以寻找住处有时并不容易。
This goal will probably be more difficult to achieve than anything else the foundation works on.
和基金会从事的任何其它工作相比，这个目标或许更难实现。
A few circles, they say, display a phenomenal level of complexity and would be difficult to draw on paper, let alone in a field after dark.
有一小部分的怪圈，更是复杂得出奇，画在纸上都困难，更不用说在深夜里去制作它。
It can be difficult to work with security issues across documents event on the same site.
处理同一站点中跨文档事件的安全问题比较困难。
Transparency can be difficult to achieve (depending on your work environment), but can be greatly beneficial.
透明很难实现(取决于你的工作环境)，但却非常有益处。
There's a lot of work still to be done, and it's difficult this early on to judge how much community help will be there (we've gotten some excellent contributions to date already).
目前，还有许多工作亟待完成。而且现在还很难判断整个社区的支持会到什么程度(我们现在已经得到了许多来自社区的优秀贡献)。
The trade publication says this is because Amazon's executives felt Apple's grip on the music market would be too difficult to break.
商业出版商说，这是因为亚马逊的主管们感到难以打破苹果公司对音乐市场的控制。
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