I believe they can be rational.
我相信他们是理性的。
She was too sad to be rational.
她太悲伤了，无法保持理智。
I've tried to be rational about it.
我一直都试着理性地对待这类事。
She says she is trying to be rational.
她说她一直试图保持理智。
试图保持理智？
But human beings are supposed to be rational animals.
但人类应该是理性的动物。
In your example, the problem is that both interpretations seem to be rational.
在你的例子中，问题在于两种解读看起来都是合理的。
Most traders can be rational on a fine weekend when the markets are closed.
大多数交易者在周末收盘时是理性的。
Learn to be quiet, learn to be rational, learn to be strong, learn to work hard.
学会安静，学会理智，学会坚强，学会努力。
This can be rational behaviour if investors think that everyone else will do the same.
如果投资者认为所有人都会采取同样做法，这可能是理性的。
The problems that Internet has brought to us do exist, but we have to be rational.
因特网给我们所带来的问题的确存在，但是我们必须要理性看待。
They may be rational - based on reason or facts - or irrational - based on false ideas.
它们可以是理性的——基于事实和推理，也可以是不理性的- - -基于错误的想法。
But in the view of modern cognitive science, someone who lacks judgment cannot be rational.
在现代认知科学的观点看来，缺乏判断力的个体是不可能合理的。
In the process of dealing with the company issues, a leader may be rational or emotional.
在处理公司问题的过程中，领导者可能是理性的或情绪化的。
For our beliefs to be rational they must correspond to the way the world is-they must be true.
我们的信念如果要合理的话，它们就必须符合现实世界的运行方式，即它们必须是真实的。
The pipelines arranged in the mold must be rational so that temperature can rise quickly.
模具内部开设管道必须合理，以确保可以快速升温和降温。
Behaviour that may be rational for individual actors can cause chaos if everyone copies it.
个人合理的行为，若是每个人都照样做就会造成混乱。
With Japan's reactors still unstable, it may be difficult to be rational about nuclear energy.
日本的反应堆还没有稳定，对核电很难理性地去评判。
The belt conveyer's technology should be rational, complete machine cost and operating expenses be low.
带式输送机应该是技术合理，整机成本和运行费用低。
People in the most money at the same time seeking to be rational manner, and maintain a calm state of mind.
人们在最求金钱的同时，应理性地看待，保持平和的心态。
According to Gladwell's lay definition, people in these cases have lost emotion, so they must be rational thinkers.
根据格拉德·维尔下设的定义，这些患者已经失去了情绪的能力，所以他们一定是合理的思考者。
So, even if Beckoning temporary, they will be rational to the excited mood down, at least look not shows hidden.
所以，即使有一时的心动，他们也会理性的把这种激动的情绪压下去，至少会不露神色的隐藏起来。
"With men he can be rational and unaffected, but when he has ladies to please, every feature works" (Jane Austen).
“和男人们在一起他可以相当真诚和理智，但当他要讨小姐们欢心时他会极尽谄媚之能事”（简·奥斯汀）。
The entire past decade has been irrational, but my strong and sensible mom is telling me she is trying to be rational.
在过去的整整十年里她一直都不理智，但如今，我的坚定而敏感的母亲却告诉我说，她一直在试图保持理智。
So we should pay more attention to who can have a second child and be rational when we choose whether to have a second child.
所以我们应该更加关注谁能有第二个孩子，是合理的，当我们选择是否有第二个孩子。
And the college students who are a special consumer group of many self advantages should do their best to be rational consumers.
大学生作为特殊的消费群体，应在发扬自身优势的同时争取做个理性的消费决策者。
Confident tin the inherent goodness of human beings, they presumed that the vast majority of customers would be rational and fair.
他们相信人性本善，认为绝大多数的顾客是理性和公平的。
Shopping online should be rational we just buy what we need the rest even is cheaper but without value we must realize is a waste.
网上购物要理性，我们只买所需的，其他的即使再便宜，没有价值，我们必须意识到这是浪费。
Shopping online should be rational we just buy what we need the rest even is cheaper but without value we must realize is a waste.
网上购物要理性，我们只买所需的，其他的即使再便宜，没有价值，我们必须意识到这是浪费。
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