Reconstructing the climate changes of the past is extremely difficult, because systematic weather observations began only a few centuries ago, in Europe and North America.
重建过去的气候变化是极其困难的，因为在欧洲和北美，几个世纪前才开始系统的天气观测。
It's true that your father will find it extremely difficult to get out of the habit of smoking, but he should try his best for health's sake.
确实，要你父亲改掉吸烟的习惯很难，但是为了健康，他应该尽力戒除。
Changing eating patterns can be extremely difficult.
改变饮食方式可以是极其困难的。
"Not only does this kill some cells, it's extremely difficult to do," Whitesides says.
这不仅会杀死部分细胞，还很难操作。
Interface bloat: Making an interface so powerful that it is extremely difficult to implement.
接口膨胀(Interface bloat)：把一个接口做得过于强大以至于极其难以实现。
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。
Some relatives complain that the partners they take care of are extremely difficult to deal with.
有些亲属抱怨说，他们照护的伙伴特别难对付。
The lack of such a scheme makes it extremely difficult for international students to raise financing.
缺少了这个方案，国际留学生筹集资金就变得十分困难。
Mister Sagan worked for many months on what to say in the message. It was an extremely difficult task.
萨根先生为这条信息应该说些什么忙了好几个月，这是一项非常艰巨的任务。
It is extremely difficult to produce the visual output when deriving the UML model from an XML schema.
从XML模式派生uml模型时生成可视化的输出非常困难。
Without CCS it's going to be extremely difficult to meet any reasonably forward-leaning climate change goal.
如果没有碳捕捉和存储技术的支持，实现任何合理的前瞻性气候变化目标都将变得极为困难。
Such a system would be extremely difficult for day-to-day management and organization of data by human users.
人类用这种系统进行日常的数据组织和管理是极其困难的。
It's extremely difficult to perceive that the source of these problems is our own inappropriate attitudes.
很难理解这些问题的根源是我们自己不恰当的态度。
Furthermore, this sort of error is extremely difficult to track when you are globalizing your application.
另外，在全球化应用程序时很难跟踪这种类型的错误。
The only problem is that it can be extremely difficult to achieve such a following, which is where we come in.
唯一的问题是，拥有这么多追随者是一件很难的事，而这也正是我们的切入点。
They do a great job, they are operating in extremely difficult circumstances and they are trying to protect us.
他们很棒，他们在极其艰难的环境下依然努力保护我们。
Speed and reliability in travel search, especially around flights, is an extremely difficult area to master.
旅游搜索的速度和可靠性最难掌控，尤其是对于机票搜索。
But it is also this natural tendency that makes trading (which looks like it should be easy) extremely difficult.
但是就是这个自然倾向导致交易(看起来很简单)极度困难。
Predicting further leakages is extremely difficult, says Gabor Figeczky of the World Wildlife Fund’s Hungarian arm.
世界野生动植物基金会匈牙利分会的嘉伯•菲盖茨（GaborFigeczky）说：对是否会有进一步泄漏的预测是非常困难的。
In the early days of theater costuming, it was extremely difficult to make blue dye, and thus expensive to purchase.
在剧院服饰装扮的早期，要制造蓝色的染料特别困难，所以购买的费用也很高昂。
Customizing wireless security is extremely difficult, especially given the limited computing power on handheld devices.
定制无线安全性非常困难，尤其是对于手持设备上有限的计算能力。
Ext2fs does not have particularly brilliant sector management, making the designing of a block driver extremely difficult.
Ext2fs没有特别完美的扇区管理，这使设计块驱动程序十分困难。
The number of scanners, and the difficulty of controlling dreams, has meant that the experiment was extremely difficult.
需要扫描仪的数量以及梦境控制的难度都使得实施该实验相当困难。
They have an extremely difficult time handling criticism or rejection and tend to fear anything that they might not succeed in.
他们很难接受别人的批评或是拒绝，他们害怕一切可能的失败。
Somalia is an extremely difficult and complex environment for international agencies, few of which are working on the ground.
对国际机构来说，索马里的情况异常困难和复杂，很少有机构到基层中去。
Unfortunately, hand holding a camera in low light can be extremely difficult and many honest attempts result in soft images.
不幸的是，在弱光环境下手持相机拍摄是有一定难度的，得到的往往是一张模糊不清的照片。
Unfortunately, hand holding a camera in low light can be extremely difficult and many honest attempts result in soft images.
不幸的是，在弱光环境下手持相机拍摄是有一定难度的，得到的往往是一张模糊不清的照片。
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