Scientists have identified thousands of known ants species around the world.
科学家们已经确认了世界各地数千种已知的蚂蚁种类。
It is so close that space scientists have considered it as a next-door neighbor.
它离我们如此之近，以至于太空科学家都把它看作是我们的邻居。
Scientists have different theories as to why there's a relationship between the two.
对于两者之间关系的由来，科学家们有不同的理论。
Scientists have long known that bees carry a sort of wrist watch inside their bodies.
科学家早已知道，蜜蜂在体内携带着某种手表。
Scientists have obtained more evidence that plastic is finding its way into the human body.
科学家们已经获得了更多的证据来证明塑料正在进入人体内。
Scientists have a fairly negative attitude to the theory.
科学家对这个理论的态度是相当消极的。
Scientists have identified a link between diet and cancer.
科学家发现了饮食与癌症之间的关联。
Scientists have tried to tap Internet donors, too, with mixed success.
科学家们也曾尝试利用互联网捐助者，但成败参半。
Given curiosity's complexity, scientists have found it hard to define.
考虑到好奇的复杂性，科学家们发现很难定义它。
Scientists have tried to approach the question in a more systematic way.
科学家们试图用一种更系统的方法来解决这个问题。
Many scientists have therefore concluded that a sixth great mass extinction is currently in progress.
因此，许多科学家得出结论，第六次大规模物种灭绝正在发生。
Scientists have got involved too.
不少科学家也加入这一行列。
Now scientists have added a new factor to consider.
现在科学家们有了新的参考因素。
They are unlike anything scientists have seen before.
那是科学家们始料未及的景象。
Scientists have long known about this variability.
科学家们早就知道这种个体差异了。
Modern climate scientists have much to learn from it.
当今的气候学家还有很多要向他们学习。
Scientists have been working on this for a long time.
科学家对此进行了长期的研究。
Scientists have built an exciting project 270 miles into space.
科学家们已经在太空270英里处建造了一项激动人心的工程。
Now scientists have found such efforts have a long history.
现在，科学家们发现这样的努力由来已久。
NASA scientists have studied Earth long enough to know this.
美国宇航局(NASA)的科学家们长期研究地球，对此了如指掌。
Scientists have discovered that true love really does exist.
科学家发现真爱确实存在。
Nevertheless, scientists have studied the fruit's properties.
尽管如此，科学家们研究了水果的属性。
The two scientists have published their work in the journal Nature.
两个科学家在自然杂志上刊出他们的工作成果。
It's not the first time scientists have linked aircraft to weather.
这不是科学家第一次把飞机与天气联系起来。
Scientists have long known that people perceive scents differently.
科学家们早就发现，每个人对气味的感知不同。
To avoid needless treatment, scientists have developed a blood test.
为了避免不必要的治疗，科学家们发明了一种血液测试。
This is a subject into which many scientists have researched with no result.
这是一个虽经很多科学家研究过但尚无结果的课题。
But since then, scientists have been stumped about how they got there.
但是自从那时以来，科学家们一直无法解释它的成因。
Scientists have long thought that the structure of our brain is fixed.
科学家们长期认为人类大脑的结构是固定的。
Scientists have long thought that the structure of our brain is fixed.
科学家们长期认为人类大脑的结构是固定的。
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