No one has come up with a definitive answer as to why this should be so.
至于为什么该这样，还没有人给出明确的答复。
Each one has its advantages and disadvantages.
每一种都有其优缺点。
Only when one has accepted that, is there any possibility of scoring a bull's eye.
只有当一个人意识到这一点，才能够射中靶心。
If no one has the courage to speak out against bullying, the situation will be worse.
如果没有人敢挺身而出站反对霸凌，情况会更糟。
Experts in public health accepted this idea decades ago, but until now no one has been able to show that a woman's ability to read in itself improves her children's chances of survival.
几十年前，公共卫生专家就接受了这一观点。但到目前为止，还没有人能够证明女性的阅读能力本身就能提高孩子的生存几率。
If no one owns the resource concerned, no one has an interest in conserving it or fostering it: fish is the best example of this.
如果没人拥有相关的资源，就没有人有兴趣去保护或培育它：鱼类就是最好的例子。
I've asked for volunteers in all of the classes I teach, but no one has responded.
我已经在自己所教的所有班上问过了志愿者相关事宜，但是没有人响应。
Just what evolutionary niche they filled is up for debate, largely because no one has seen a spinosaurus skeleton for the last 50 years.
他们究竟填补了哪些进化中的生态位有待讨论，主要是因为在过去50年里没有人见过棘龙的骨骼。
Appearances can deceive, ecologists caution, and many of these exotics may be considered acceptable only because no one has documented their harmful effects.
生态学家警告说，外表可能具有欺骗性，而且这些外来物种中可能有许多是为人接受的，只是因为没有人记载过其有害影响。
Yet appearances can deceive, ecologists caution, and many of these exotics may be considered acceptable only because no one has documented their harmful effects.
然而，生态学家警告说，这些表象可能并不是真的；而且，这些外来物种中有许多可能被认为是可接受的，只是因为没有人记载过它们的有害影响。
Crying is a nearly universal sign of grief, though some mourners report that, despite genuine sorrow, they cannot shed tears—sometimes even for years after their loved one has gone.
哭泣几乎是悲伤的普遍标志，但一些哀悼者表示，尽管他们确实感到悲伤，却流不出眼泪——有时甚至在他们所爱的人去世多年之后也是如此。
"No one has been allowed to go into it for ten years," was Mary's careful answer.
“十年来，谁也不许进去。”玛丽小心翼翼地回答。
We only showed it in mice, so one has to extend this to other animal models—the ferret and the guinea pig.
我们只在老鼠身上实验成功，还需要扩展到其他的动物样本上——雪貂和豚鼠。
But given everything we've been talking about here, one has to ask: are there alternatives to this motor theory — this claim that muscular activities are equivalent to thinking?
但是考虑到我们在这里所讨论的一切，我们不得不问：有没有其他的方法可以替代这个运动理论——这个声称肌肉活动等同于思考的理论？
No one has ever questioned her judgement.
对她的判断从没有人表示过怀疑。
No one has found one of their canoes or any rigging, which could reveal how the canoes were sailed.
没有人发现他们的独木舟或任何索具，而这些东西可以揭示独木舟是如何航行的。
Consider this, he says: "while one is thinking or doubting, or doing any of those sorts of mental activities, one has to exist, right?"
想了一下这个，他说：“当一个人在思考或质疑，或做任何类似这种的精神活动时，他必须存在，对吧？”
That is why many people know different things, but no one has all the wisdom in the world.
这就是为何许多人知道不同的事情，但却没有人能拥有世上所有智慧。
The bike bus has a driver and eleven seats for kids. Each one has a helmet and safety belt.
自行车巴士上有一个司机和11个孩子的座位。每个座位都有头盔和安全带。
Historically, humans get serious about avoiding disasters only after one has just struck them.
从历史上看，人类只有在灾难刚发生后才会认真地避免灾难。
"No one has a good answer" as to why fertility varies among countries, says sociologist Andrew Cherlin of The Johns Hopkins University.
约翰霍普金斯大学的社会学家安德鲁·切尔林说，对于为什么不同国家的生育率不同，“没有人能给出一个好的答案”。
No one has laughed at me for years.
多年来没有人再嘲笑我了。
But to date no-one has succeeded in detecting them.
不过，时至今日，还没有人成功捕捉到引力波的身影。
But one has told the BBC that activists will not be intimidated.
但是一名组织者告诉BBC，活动积极分子不会受到恐吓。
It matters nothing if one is born in a duck-yard, if one has only lain in a swan's egg.
出生在鸭窝里有什么关系，只要是从天鹅蛋里孵化出来的就行了。
"This one has some dishes that you don't find at other Indian restaurants," said Colleen.
科琳说：“这家餐厅里有些菜在别的印度餐馆可找不到。”
To reach the apex of one's potential, one has to accomplish smaller goals and build skyward.
为了能够达到自己潜能的顶点，我们必须先去实现更小的目标并且搭建通往最终目标的天梯。
Whether it’s an awful or a brilliant one has a lot more to do with you than it does the idea.
它是一个糟糕的主意还是一个杰出的主意更多的取决于你怎么做而不是主意本身是好是坏。
Although little has changed here for millions of years, no one has ever seen this view before.
尽管千万年来这里的面貌并没有太多改变，但是没有一个人曾有幸欣赏此处的景色。
Unlike other tales of Chinese joint ventures, like Beijing Jeep, this one has a happy ending.
与中国其他的合资企业——例如北京吉普（Beijing Jeep）——不同，通用中国的结局可谓皆大欢喜。
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