However, static ARP entries are hard to maintain; impossible in large networks.
然而，静态ARP很难被维护；在大型网络中更是不可能。
At last, it is hard to maintain, just as interface design and procedure design are mixed.
三是界面设计和程序设计混在一起，维护相对困难。
Tavares has worked hard to maintain, and also to restore, his little piece of the rainforest.
塔瓦雷斯一直努力维持恢复着他的小片雨林。
With all that repeated code, you're bound to have inconsistencies, and it will be hard to maintain.
对于所有重复的代码，一定会出现不一致性，因此将很难进行维护。
Keeping a journal works well for some people, but many find it hard to maintain when on the go.
记日记当然是一个很好的习惯，但可能有些时候在旅途中很难坚持下来。
It struggles to really deliver when you're moving, and has to be worked hard to maintain pace.
它的斗争，要真正交付当你迈步，并须努力工作，以保持步伐。
At Quality Dry Cleaning we work very hard to maintain our positive reputation in the Springfield area.
在质量干洗我们的工作很努力，以维持我们的积极的声誉，在斯普林菲尔德地区。
Sometimes it's hard to maintain an objective stance, especially since you are right in the middle of this.
有时，保持客观是很困难的，特别是在你正确的情况下。
Some-times, it is hard to maintain higher and higher capital debts if it solely depends on the box office.
有时，光靠票房收入难以维持其越来越高的资产负债。
Any cadence other than our normal running cadence is extremely hard to maintain for an extended period of time.
在相对较长的时间段里，想要保持任何与平时奔跑步频不同的节奏都是特别艰难的一件事。
The problem with this approach is that in practice, it turns out to be way too hard to maintain 2 sets of properties.
很明显，这种方式的问题在于在实际应用中很难维护两套属性。
Unfortunately, this air-tight seal is often hard to maintain, especially if passengers want to walk between cars.
但不幸的是，这种高气密的设备不容易保养维护，特别是当乘客们想要在车与车之间走动时显得更为困难。
Though she has strong opinions, she works hard to maintain solid relationships with the important peeps in her field.
她的个人观点十分鲜明，她一直努力着在自己领域中发表重要的看法。
At times, particularly in the 'middle years, ' it can be very hard to maintain a positive attitude and stay motivated.
有时，尤其是在研究生“中期”，似乎觉得很难保持积极向上的斗志。
Then Web Service becomes huger and huger so that it is hard to maintain and update at the same pace of users and users' need.
因而网络服务不可避免的日益巨型化，从而导致难于维护、升级以满足时时变化的用户和用户需求。
At best this caused hard to maintain code and at worst brittle code that fails when new types in the enterprise extend existing types.
即使最好的情况下这也会带来代码维护的困难，而最坏的情况当企业扩展现有类型而引入新类型时，脆弱的代码就会失效。
However, blameless emerging economies, especially small, open ones, would also find domestic monetary stability hard to maintain.
然而，无辜的新兴国家，尤其是那些小型开放式经济，将难以维持国内货币局势稳定。
When you lose a job, especially in this economy where it can be so difficult to find another one, it's hard to maintain your sense of self.
丢了工作之后，人们难免妄自菲薄，特别是在当前的经济形势下，重新就业尤为艰难。
Even if you work in a mechanic's garage or other job where cleanliness is hard to maintain, people still notice the way you look after yourself.
即使你的工作场所是机械师的车库，或其他难以保持干净整洁的地方，人们仍然会留意你的外表。
The nutritional survey shown that at present living standard for the patients with leprosy is very low and hard to maintain basic nutrition for them.
本次调查表明我国麻风患者目前的生活救济费偏低，难以维持其基本的营养需要。
Traditional methods of applying dedicated algorithms and heuristics result in hard to maintain, unwieldy systems with performance degradation over time.
应用传统的算法和启发式方法很难维护，因为随着时间的推移，系统的性能下降使系统变得难以控制。
Optimism might be hard to maintain in the face of serious heart disease. But a new study suggests that thinking good thoughts might help with long-term recovery.
对于一个心脏病患者来说，保持乐观的心态可能有点难。可是一项研究表明往好处想可能对你的长期回复有帮助。
I couldn't shake the fear that he'd push the chair back and fly into a rage breaking the delicate atmosphere that the teachers and I worked so hard to maintain.
我不免有些担心他会将椅子向后推去，狂怒之下，破坏了这纤细的课堂气氛，而这气氛，是由那些老师们和我一起，长期精心所维护的。
In my opinion, the density of Perl 5's regular expressions is one of the reasons why the language is so powerful, while at the same time fairly hard to maintain.
我认为，Perl5的正则表达式的晦涩，也正是这门语言如此强大的原因之一，尽管它同时还相当难以维护。
Forty thousand people in the agricultural industry are finding it very hard to maintain their jobs and eight out of ten families in Gaza are dependent on food aid.
在农业方面工作的4万人发现很难维持他们的工作，而每10个加沙家庭中就有8个要靠食品援助过活。
One reason why countries tried so hard to maintain the gold standard and the Bretton Woods system was to reassure creditors that they would be repaid in sound money.
各国努力维持黄金衡量标准和布雷顿森林体系的一个理由，就是要让债权人放心他们借出去的钱会得到偿付。
One reason why countries tried so hard to maintain the gold standard and the Bretton Woods system was to reassure creditors that they would be repaid in sound money.
各国努力维持黄金衡量标准和布雷顿森林体系的一个理由，就是要让债权人放心他们借出去的钱会得到偿付。
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