密钥越大，可能值的数量就越大，使用蛮力技术破解它就越难。
The larger the key, the greater the possible number of values and the harder it is to crack using brute force techniques.
这是平台的本质：工具越灵活，便越难预见人们将如何使用它。
That's the nature of platforms. The more versatile the tool, the less you can predict how people will use it.
选择刚好满足需求的框架可能有点难，尤其是当您以前未曾使用过任何一个框架时更是如此。
Selecting the right one for your needs can be somewhat difficult, especially if you haven't used any of them before.
带着孩子环游世界已经足够难的了，但是尝试着不使用机动交通设备带着孩子环游世界是一个更大的挑战。
Traveling around the world with children is difficult enough, but attempting it without using motorized transport is even more of a challenge.
惩罚那些开车时使用手持设备的人已经够难的了，即使从车外都能看到他们。
Punishing people for using hand-held gadgets while driving is difficult enough, even though they can be seen from outside the car.
习语是十分难正确使用的。
酚醛树脂以其难燃、低发烟、耐热的优点被大量使用。
The phenolic resin can be widely used in the subway because of its flame retardant, low smoke and heat resistance.
你首先必须用这种难的方式来训练你的大脑，然后你可以使用这些工具。
You first have to train your brain the hard way, then you can use the tools.
如果某个库非常难使用，或者有一些非常奇怪的需求，又或者很难与其他组件进行集成，那么这个库可能不是很适合您的产品。
If a library is difficult to use, has strange requirements, or is difficult to marry with other components, it won't make a good basis for your product.
我们不会让孩子担心自己不会使用“难的单词”或者担心语法错误，相反，我们会让他们根据每一个单元和主题学到的单词和想法表达自己的感受和思想。
Instead of forcing students to worry about using "very hardwords" or using the correct grammar, we will express their feelings andideas based on words and ideas they learn from each unit and theme.
这样做完全可行，但是对生手来说有点难，尤其是在不使用盐或醋等防腐材料的情况下。
It's perfectly doable but not for beginners, especially as there's no salt or vinegar to help preservation.
介绍了国内外水-乙二醇难燃液压液的标准情况，包括其主要使用性能和试验方法。
The domestic and foreign standards of water-glycol fire resistant hydraulic fluid are described, including the main working performances and test methods.
由于因果图的经典推理的计算复杂度是NP难的，不便于推广和使用。
Because the Causality Diagram's reasoning calculation is a NP problem, it is inconvenient in its popularization and application.
尽可能的把数据库仅作为一个在线存储的功能而使用，不要把业务逻辑放在数据库里，否则将来会非常难扩展；
Remove all business logic from the database such as stored procedures and move it into the application.
光催化氧化降解水体中有机污染物也是近年来兴起的一项新型水处理技术，能有效地降解废水中的难降解有机物，但因其对光源要求较高等因素限制了它的使用。
Photochemical catalysis technology has risen in recent years and can effectively degrade the hardly-degraded organic pollutants, but it is limited because of its high standards for light sources.
泥土在使用前须经过很好的改良，尤其是像粘土类难耕的土地。
The soil should be amended well, especially with heavy soils like clay.
文章介绍了金刚石钻孔工具一种新的工作层结构，该结构可以有效解决钻孔工具排粉散热难问题，提高钻孔工具的工作效率，延长钻孔工具的使用寿命。
In the paper, a new working layer structure of diamond core drill for solving the problem is introduced which can increase the efficiency and the working life of the drilling tool.
随着多氯联苯的广泛使用，越来越多的多氯联苯进入环境，并在环境中积蓄下来。由于多氯联苯的难降解性和毒性，所以防治多氯联苯的污染尤为重要。
With widely used, more and more PCBs entered environment and accumulated there. The prevention of PCBs is specially important due to its toxicity and the difficulty of degradation .
随着多氯联苯的广泛使用，越来越多的多氯联苯进入环境，并在环境中积蓄下来。由于多氯联苯的难降解性和毒性，所以防治多氯联苯的污染尤为重要。
With widely used, more and more PCBs entered environment and accumulated there. The prevention of PCBs is specially important due to its toxicity and the difficulty of degradation .
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