The optimization constraints can be stress, stiffness, displacement, frequency or buckling load and dynamic response.
优化的约束条件包括应力、刚度、位移、频率、临界压力及动响应。
It may be stress from financial difficulties, from your relationship, your kids, your work... there are hundreds of possible sources of stress throughout our lives.
压力可能源于财政困难，人际关系，孩子和你的工作等等。在我们生活中，压力的来源可能达数百个。
If you're experiencing what you believe to be stress-related muscle symptoms, try this exercise: Take 5 to 10 deep breaths and focus on relaxing the tense area of your body, says Dr. Lombardo.
Lombardo博士认为：如果你觉得你有与压力有关的肌肉症状，不妨试试以下的动作：深呼吸5到10次并专心地放松你身体紧绷的部位。
Stress can be physical, emotional, or psychological, and research has indicated that it can lead to burnout.
压力可以是身体上的、情感上的、或是心理上的，而且研究表明压力会导致精疲力竭。
Stress is taking a significant toll on our health, and the collective public health cost may be enormous.
压力正在严重损害我们的健康，而总体的公共健康成本可能是高昂的。
In a considerable percentage of cases of debt-induced financial stress, credit cards and loans will be a central element.
在相当大比例的债务引发的财务压力案例中，信用卡和贷款是核心因素。
But when stress is encountered continually, the body's reactions are more likely to be harmful than helpful to us.
但当压力不断出现时，身体的反应更有可能是对我们有害而不是有益的。
Sculptures must, for example, be stable, which requires an understanding of the properties of mass, weight distribution, and stress.
例如，雕塑必须是稳定的，这就需要理解质量、重量分布和压力的特性。
I do think that an element of stress is a good thing, and if used the right way, can actually be a positive thing.
我认为有一点压力是好事，如果处理得当，实际上它是可以带来积极影响的。
However, I do think that an element of stress is a good thing, and if used the right way, can actually be a positive thing.
然而，我认为压力元素确实是一件好事，且如果处理得当，它实际上是可以带来积极影响的事。
Slow, continuous change may be the norm during periods of environmental stability, while rapid evolution of new species occurs during periods of environment stress.
缓慢的、持续的变化可能是环境稳定时期的常态，而新物种的快速进化发生在环境压力时期。
Young people have reported that for low-level conditions such as stress and anxiety, a clinical setting can sometimes be daunting.
年轻人表示，在有轻度症状的情况下，比如有压力和感到焦虑，临床环境有时会令人望而生畏。
She encouraged the class not to stress or even study, promising that, "It is going to be a piece of cake".
她鼓励全班同学不要紧张，甚至不要复习，并承诺说：“考试将会很容易”。
Under the stress of competition, steamer was added to steamer, loss piled on loss, while the income dwindled till it ceased to be worth while to print tickets.
在竞争的压力下，轮船一艘艘增加，亏损越来越大，而收入却逐渐减少，最后连印船票都不值得了。
While there's no question that continuous stress is harmful, several studies suggest that challenging situations in which you're able to rise to the occasion can be good for you.
虽然毫无疑问，持续的压力是有害的。但有几项研究表明，在具有挑战性的情况下，如果你能够迎难而上，可能对你有好处。
If the person were not under stress, the same bodily sensations might not be perceived as symptoms and the person might continue to feel well.
如果这个人没有压力，同样的身体感觉可能不会被认为是症状，这个人可能会继续感觉良好。
They can just be symptoms of a sleep disorder that can result from an unpleasant experience, stress, or certain drugs.
它们可能只是睡眠障碍的症状，可能是由不愉快的经历、压力或某些药物引起的。
You can't leave everything until the last minute as you will definitely be under great stress by then.
你不能把所有的事情都拖到最后才做，因为到那时你肯定会压力很大。
Researchers found through experiments that students could be taught to respond to stress in a more positive way.
研究人员通过实验发现，学生可以习得更积极的压力应对方式。
Ideally, your spouse or partner will be supportive, rather than dismissive, of your stress.
理想情况下，你的配偶或同伴会支持你，而不是轻视你的压力。
Women are advised to identify the specific causes of their stress so that steps can be taken to deal with it.
建议女性找出造成其压力的具体原因，以便采取措施克服它。
Researchers measured people's cortisol, which is a stress marker, while they were at work and while they were at home and found it higher at what is supposed to be a place of refuge.
研究人员测量了人们在工作时和在家里时的皮质醇，即一种压力标志的水平，结果发现在家里，这个原本应该是安身之所的地方，皮质醇含量更高。
I think we need to stress that while there will be some job changes, there won't be anyone getting dismissed.
我认为我们需要强调的是，虽然会有一些工作变动，但没有人会被解雇。
In the early 1100s a church building method was developed that reduced the stress on the walls so more space could be used for window openings allowing for large and quite elaborate window designs.
在公元1100年代早期，人们发明了一种建造教堂的方法，这种方法可以减少墙体的压力，这样就有更多的空间可以用来开窗户，就可以有更大、更精细的窗户设计。
In part, this stress can be attributed to the overlords' failure to adjust to a rapidly expanding economy, but the stress was also due to factors beyond the overlords' control.
在一定程度上，这种压力可以归结为霸主未能适应快速扩张的经济，但这种压力也是由霸主无法控制的因素造成的。
Ekman's observation may be relevant to the British expression "keep a stiff upper lip" as a recommendation for handling stress.
埃克曼的观察结果可能与英国人的表达“保持冷静”有关，这是一种应对压力的建议。
The sport's strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport.
这项运动奇怪的形式确实给脚踝和臀部带来了相当大的压力，所以有过此类伤病史的人在接受这项运动时可能要谨慎一些。
If a boy is thinner or heavier than he would like to be, the stress and anxiety of participating in physical education may be prohibitive.
如果一个男孩比他想要的更瘦或更重，参加体育课的压力和焦虑可能会让他望而却步。
For parents who send their kids off to college saying, "These will be the best years of your life," it would be very appropriate to add, "If you can handle the stress of college life."
那些把孩子送进大学的父母说，“这将是你生命中最美好的时光”，再加上一句“如果你能应对大学生活的压力的话”会更加合适。
For parents who send their kids off to college saying, "These will be the best years of your life," it would be very appropriate to add, "If you can handle the stress of college life."
那些把孩子送进大学的父母说，“这将是你生命中最美好的时光”，再加上一句“如果你能应对大学生活的压力的话”会更加合适。
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