这是因为，它们，也只有它们，才能改变镜子里的反射。
This is because they, and only they, can change the reflection in the mirror.
老虎现在的领地只有它们原来的7%。
但是也许您不知道，并不是只有它们三个。
只有它们不会遗弃我，只有它们不会背叛。
测试套件只有它们的作者才能理解是常见情况。
Test suites that are understandable only by their owners are ubiquitous.
你往往会看到配件价格只有它们正常零售价格的十分之一。
You will often see accessories for as little as one-tenth their normal retail price.
大象们被配好对，只有它们同时拉绳子才能获得食物。
The pachyderms were paired up. Only if they pulled together could they get the food.
它和其他产品质量一样，而且价钱只有它们的一半。
It has the same quality and the price is about half that of competing products.
他们都在发生，人们很少能记住他们的名字，只有它们的位置。
They are all over the place, and people can rarely remember their names, only their locations.
不过他补充称，基金公司仍具有优势——只有它们才被允许公开推销自己的产品。
However, he adds, fund companies still have advantages - only they are allowed to promote their products publicly.
在这种缺省实施情况下，只有它们引用真正同一个对象时这两个引用才是相等的。
Under this default implementation, two references are equal only if they refer to the exact same object.
使用接收方的X . 509证书的公钥来加密消息，以便确保只有它们才能访问消息内容。
Encrypting the message with the public key of the receiver's X.509 certificate to ensure that only they can access the message content.
不要因为它们很美或是很直觉就去接受它，只有它们与实际相符的时候才去相信直觉。
Such insights should never be accepted because you admire their beauty or they are intuitive, only because they fit with reality.
博物院管理人员则坚持，这些文物收藏在哪里，其实并不重要，只有它们得到妥善保管。
The museum officials insisted that it wasn't important where the treasures were kept, only that they were preserved.
被苏斯曼选为拍摄对象的物种有一个共同点：它们都生存在极端环境下，并只有它们自己适应其独特的生境。
Many of Sussman's curiosities have one thing in common: they are found in extreme environments and are uniquely adapted to their habitat.
一些图书馆正在试图通过关注“强烈本地色彩”的材料来获得先机——也就是像Blowers所说的，只有它们图书馆有的东西，也就是俄亥俄州的图书馆员。
Some libraries are trying to gain an edge by focusing on the "deeply local" material — the stuff that only they have, said Blowers, the librarian in Ohio.
这些基于时间的技术已经融入了我们的日常生活，只有当它们不起作用时，我们才会意识到我们对它们的依赖。
Integral have these time-based technologies become to day-to-day existence that our dependency on them is recognised only when they fail to work.
日本人称其为“海啸”，意思是“港湾浪”，因为它们只有在港口才能达到相当高的高度。
The Japanese call them "tsunamis", meaning "harbour waves", because they reach a sizable height only in harbours.
虽然许多教堂从外面看起来是复杂的结构，但它们通常只有一层，只是有许多不同的屋顶。
Although many of the churches appear from the outside to be complex structures, they normally feature only a single storey but numerous different roof levels.
虽然许多教堂从外面看起来结构很复杂，然而它们通常只有一层楼，但有许多不同层级的屋顶。
Although many of the churches appear from the outside to be complex structures, they normally feature only a single story but numerous different roof levels.
只有当程序员粗心大意时，它们才是危险的。
尽管几乎有一半的男孩表示，他们会避免使用某些乐器，因为它们太难了，只有15%的女孩给出了这样的理由。
While almost half of all boys said they avoid certain instruments because they were too difficult to play, only 15% of girls gave that as a reason.
药物只有在试验证明它们是相对安全的情况，且其益处大于风险时，才会被批准使用。
Drugs are only approved after tests have demonstrated that they are relatively safe when used as directed and when their benefits outweigh their risks.
“只有一小部分外来物种会在它们的新栖息地引发问题。”田纳西大学生态学和进化生物学教授唐·史密斯说。
"Only a small percentage of alien species cause problems in their new habitats,'' said Don Smith, professor of ecology and evolutionary biology at the University of Tennessee.
它们很复杂，所以一般的原则是只有可信投资者才能参与其中。
They're complicated, so the general rule has been that only accredited investors should participate in them.
当然，只有能够证明它们仅以目标杂草为食，生物控制剂才能安全释放。
Of course, biological control agents can safely be released only if it can be verified that they feed solely on the target weed.
他发现这些巨大的大象只有一根小绳子绑在它们的前腿上。
He found that these huge elephants were being held by only a small rope tied to their front legs.
虽然世界上只有一小部分语言是没有或几乎没有数词的，但它们表明，数词并非是全人类通用的。
While only a small portion of the world's languages are anumeric or nearly anumeric, they demonstrate that number words are not a human universal.
虽然世界上只有一小部分语言是没有或几乎没有数词的，但它们表明，数词并非是全人类通用的。
While only a small portion of the world's languages are anumeric or nearly anumeric, they demonstrate that number words are not a human universal.
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