Foil wrapping paper is beautiful but difficult to use.
锡箔包装纸好看却难用。
Formulas are easy to remember but difficult to use in working out math problems.
公式容易记，但在解决数学问题时却很难应用。
This is why dentures are comparatively easy to wear, but difficult to use.
这也就是义齿较易戴住，却难于应用的原因。
We might use the word "negative" to describe more difficult emotions, but it doesn't mean those emotions are bad or we shouldn't have them.
我们可能会用“消极”这个词来描述更麻烦的情绪，但这并不意味着这些情绪是不好的，或者我们不应该有这些情绪。
A poor community in the developing world may find it difficult to bring in foreign fruits or raise cattle for meat, but it can almost certainly use the land it has in order to grow plenty of rice.
发展中国家的贫困社区可能会发现很难引进外国水果或饲养肉牛，但几乎可以肯定的是，它可以利用其拥有的土地来种植大量的水稻。
But they are difficult to make and require the use of an embryo or cloning technology.
但是制造他们是很困难的，而且需要使用胚胎或者是克隆技术。
It is difficult to find such people, but even if you can, it is more difficult to use their time for data modeling rather than performing their standard business duties.
找到这样的人是很困难的，但即使可以，使用他们的时间来进行数据建模也比让他们尽普通业务职责更加困难。
You might write a generic library, but such libraries can be complex to use, error prone, and difficult to debug.
您还可以编写通用的类库，但是这样的库使用起来复杂不说，而且还非常容易出错，难以调试。
Developing this technology was difficult, but not as big a challenge as getting permission to use it.
技术开发是困难的，但是获许使用，则面临更大的挑战。
But experts say it will be very difficult to isolate this part of the protein from the virus to use in a vaccine, or to manufacture it using genetic engineering.
不过，专家们说，很难从病毒中分离出这部分蛋白质用于疫苗，或利用基因工程生产出这种蛋白质。
But she also says it'll be difficult to enforce a ban on the use of her father's image in China.
但她也说，禁止在中国使用她父亲的肖像是有难度的。
But no reality shows push the less dramatic method, and it is difficult to find clinicians who use it.
但没有任何真实秀节目推广这种温和的方法，也很难找到临床医师使用这种方法。
But it was not always practical. To add shadows to text, you had to use images, which increased loading time and made maintenance more difficult.
但其实并不总是那么好搞的，要给文本添加阴影，你得使用的图片，从而增加加载时间，并且维护更加困难。
You can do that, but you need to use XPCOM to bind to external libraries, and doing that reduces portability — or at least makes things more difficult.
您可以这样做，但是需要使用XPCOM绑定到外部库，而这样会降低可移植性，或者至少增加了移植的难度。
It is very difficult to believe but a truth that the microwave oven that you use in your kitchen could be harmful during pregnancy.
很难相信，但事实是，对于怀孕期间的妇女来讲，厨房中使用微波炉是有害的。
These things can be difficult to use at first, but you will soon learn how to pick up even small pieces of food.
论文的东西是难以用在第一，但你会很快学会如何拿起食物，甚至小部分。
So, I’ve been able to use hiking to create a career, but it has been a difficult path to pursue.
因此，我能够通过徒步穿越创造一个新的职业，但是这是一条很困难的道路。
The disadvantage of the traditional formal languages is that they are used by people who possess a solid mathematical knowledge, but they are difficult to use for a modeling system.
传统规范语言的劣势在于，它们是由拥有稳固数学知识的人员使用的，使用它来建模系统很困难。
Its Bezier curves are useful, but I find that these are somewhat difficult to use as far as my personal opinion is concerned.
贝塞尔曲线是非常有用的，但是以我个人角度来看我觉得有些难用。
It is theoretically possible to exclude some from the use of a poem, or a mathematical theorem, but exclusion is generally quite difficult.
理论上说，存在排除某些人使用某句诗歌或某个数学定理的可能。
Smartphones and laptops use LCD screens that offer vivid color images but are difficult to read in sunlight.
智能手机和笔记本电脑的LCD屏幕能够显示色彩生活的图像，不过在阳光下识别就比较困难。
You have said this in different ways in most of your talks and I find this awfully difficult, not only to grasp the idea, the depth of it but the feeling of quiet emptiness, if I can use that word.
在大多数讲话中你用不同方式说过这些，但是我发现这很难做到，不光是理解这个想法以及它的深度很难，而且理解安静的空无感觉也很难，如果我可以用这个词的话。
In many cases, explains Mr. Johnson, the reason for such leaks is not malice or even recklessness, but that corporate applications are often difficult to use, in particular in health care.
Johnson解释说实际上在很多情况下，这样的信息泄露是非恶意的，甚至是无意的。但收入信息就没那么有必要了，尤其是在医疗健康记录上。
Creating the test code using the Selenium IDE may be easy to use initially, but it is difficult to generalize and refactor.
使用SeleniumIDE生成测试代码，这可能在一开始比较容易，但归纳和重构起来就很困难了。
The more difficult case is when the application has the correct object but it attempts to use an elevated right that has not been granted, such as +altuser or +passid.
比较棘手的情况是应用程序有正确的对象，但尝试使用未授权的提升权限，比如 +altuser或 +passid。
To use this module, you need the underlying module mxTextTools, which implements a "tagging engine" in C. mxTextTools (see Resources later in this article) is powerful, but rather difficult to use.
要使用这个模块，您需要底层模块mxTextTools ，它用 C实现了一个“标记引擎”。 mxTextTools （请参阅本文后面的 参考资料）的功能强大，但是相当难用。
It is easy to use, reliable, inexpensive, solid structure, but the lower power factor, speed is also more difficult.
它使用方便、运行可靠、价格低廉、结构牢固，但功率因数较低，调速也较困难。
Reassigning variables is often useful, but you should use it with caution. If the values of variables change frequently, it can make the code difficult to read and debug.
对变量进行再赋值总是很有用的，但你用的时候要做好备注和提示。如果变量的值频繁变化，就可能让代码难以阅读和调试。
Although this pride is very sad, but since it has become the only thing they can use to show off their weapons, it is difficult for outsiders to put down the weapon.
虽然这种自豪感很让人悲哀，但既然这变成了他们唯一可用来炫耀的武器后，外人就很难让他们愿意放下这武器。
Although this pride is very sad, but since it has become the only thing they can use to show off their weapons, it is difficult for outsiders to put down the weapon.
虽然这种自豪感很让人悲哀，但既然这变成了他们唯一可用来炫耀的武器后，外人就很难让他们愿意放下这武器。
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