地震学家们知道断层在哪里，也能评估地震风险，但提前预报某次地震仍是一个难以达到的目标。
Seismologists know where faults are, and can assess earthquake risk, but predicting specific quakes ahead of time has been an elusive goal.
心流的第一个必要条件是设定一个具有挑战性但不是难以达到的目标——你必须汇集你的资源并尽最大的努力才能完成的事。
The first requirement for flow is to set a goal that's challenging but not unattainable-something you have to marshal your resources and stretch yourself to achieve.
声音城市在简单的但有时难以达到的目标，创造完美的录音的庆祝活动，这里是戴夫grohl制作并导演纪录片声音的城市一个新的拖车。
In celebration of the simple yet sometimes unattainable goal of creating the perfect sound recording, here is a new trailer for the Dave Grohl-produced and directed documentary sound City.
但是这项新的研究也发现了一个令人瞩目的结论：那些能从难以达到的目标中摆脱出来的女孩子证实，从长远来看她们更不易罹患更加严重的抑郁症。
But the new study also found a remarkable corollary: those women who could disengage from the unattainable proved less likely to suffer more serious depression in the long run.
总之，随着经济活动的日益萧条，这些地区的预算目标越来越难以达到。
In general, budgetary targets in the region are increasingly not being met as economic activity slows.
虚幻的所有可用测试的100%的运行目标常常看起来非常接近，但是却难以达到。
The illusive run target of 100% of all available tests often seems excruciatingly close but unattainable.
对人们来说，不断成功的执行复杂的、步骤众多的流程的目标是非常难以达到的。
This is hard for human beings to achieve continuously when carrying out complex, multi-step processes.
自从“伟哥”十年前面市后成为价值数十亿的全球抢手货，寻找一种能对女性起神奇作用的同类物品一直是制药公司孜孜以求的重要目标，但这目标却难以达到。
Ever since Viagra arrived a decade ago and became a global blockbuster worth billions, an equivalent that works wonders for women has been the Holy Grail for drug companies.
这句话听起来并不那么令人振奋，但是对于Vinge博士的许多粉丝而言，这却是我们这一物种中的任何一个成员最有雄心的——但却有可能是非常难以达到的——目标。
It may not sound inspiring, but to the many fans of Dr. Vinge, this is a most ambitious - and perhaps unattainable - goal for any member of our species.
在煤炭市场营销活动中，企业逐渐发现，许多经过精心策划的市场营销组合计划在实施过程中困难重重，难以达到预期目标。
In coal marketing operations, enterprises gradually find out it is very difficult to realize many elaborately planned marketing schemes and hard to reach the target expected.
米洛萨夫列维奇说，塞尔维亚的主要策略目标是维持欧盟成员的身份，如果这一目标难以达到的话，塞尔维亚将进一步加强与俄罗斯、中国、土耳其的关系。
Serbia's main strategic goal remains EU membership, says Mr Milosavljevic, but if this begins to look unattainable his country will further intensify relations with Russia, China and Turkey.
如果目标太高，难以达到，只会影响孩子的自信心。
If the target is too high, difficult to achieve, only can affect a child's confidence.
因此，这样的规划失去了根基，脱离了实际，难以达到外部环境、内部条件、企业目标三者的协调一致，可能把企业引向歧途。
They can hardly make the three of the outside environment, the interior conditions and the enterprise aim to be coordinated, and even may result in the enterprise' s failure.
注意力过少的话，难以达到生活中的目标；注意力过多的话，难以从消极感受和思考中逃脱。
Too little attention and it's difficult to achieve goals in life, too much attention and it's hard to break free from loops of negative thinking and feeling.
但层间封隔问题更引人注意，特别是当有气体侵入水泥环中的可能时更是难以达到预期目标。
The later usually raises the most concern and is perhaps the hardest goal to achieve when there is potential for formation gas to migrate into the cement sheath.
设计一个运行性能优良、可控性好的熔窑是玻璃熔窑设计师追求的重要目标，单凭经验进行设计难以达到这一目标，而借助于模拟技术则有可能实现。
The method of designing new furnaces based only on experience can hardly satisfy such purpose, but the simulation technique may help to reach this goal.
设计一个运行性能优良、可控性好的熔窑是玻璃熔窑设计师追求的重要目标，单凭经验进行设计难以达到这一目标，而借助于模拟技术则有可能实现。
The method of designing new furnaces based only on experience can hardly satisfy such purpose, but the simulation technique may help to reach this goal.
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