美国科学家多年来一直在使用仪器寻找类地行星。
American scientists have been using instruments for years to look for earth-like planets.
美国科学家说，老年人正变得更健康、更快乐、更独立。
Elderly people are growing healthier, happier and more independent, say American scientists.
美国科学家称，每个办公室都可以使用便携式踏板机来改善员工的健康状况。
Portable pedal machines could be used in every office to improve the health of workers, according to scientists in the US.
美国科学家贾里德·戴蒙德认为，拉帕努伊人，即波利尼西亚定居者的后代，破坏了他们自己的环境。
US scientist Jared Diamond believes that the Rapanui people—descendants of Polynesian settlers—wrecked their own environment.
以伟大的美国科学家托马斯·爱迪生为例，他做了一次又一次的实验，失败了一次又一次才最终发明了灯泡。
Take the great American scientist Thomas Edison as an example. He tried experiment after experiment and had one failure after another before he finally invented the bulb.
美国科学家表示，年轻人的大脑处理信息的速度比老年人要快。
According to the US scientists, young people's brains deal with information faster than older people.
马特·波恩基诺目前是美国科学家联盟的研究员。
Matt Buongiorno is currently serving as a Scoville Fellow at the Federation of American Scientists.
美国科学家喜欢这种项目，对此颇为注意。
The American scientists liked this project and paid much attention to it.
美国科学家将这种胶体用在雌性猴子身上做实验。
Scientists at the United States tested the gel on female monkeys.
美国科学家正在建造史上最大的反物质捕捉设备。
美国科学家称，覆盖北冰洋的冰面去年冬天继续缩减。
American scientists say ice covering the Arctic Sea continued to shrink last winter.
但是更便宜更快并不是美国科学家所担心失去的创新力。
But cheaper and faster isn't the kind of innovation U.S. scientists are so worried about losing.
一组美国科学家调查了32位1918年流感的幸存者。
Even if they were infected more than 90 years ago. A team of American scientists studied 32 people who survived the 1918 flu epidemic.
去年秋天美国科学家首次发布了长毛象基因组80%的测序。
Last autumn, scientists in the US published a first draft of the woolly mammoth's genome, which is thought to be about 80% complete.
美国科学家日前对第一次发现的恐龙心脏化石进行了深入研究。
The first ever fossilised dinosaur heart has been discovered by scientists in the US.
美国科学家表示，一种树菌能够提供直接由车辆使用的绿色燃料。
A tree fungus could provide green fuel that can be pumped directly into vehicle tanks, us scientists say.
美国科学家研究了144个牙科病人，其中差不多有一半是红发人。
Scientists in the United States studied a group of 144 dental patients almost half of whom had red hair.
一组美国科学家指出，到那时，养活额外的30亿人口可能需要两倍的水。
One group of US scientists suggests that feeding the 3 billion extra people could require twice as much water by then.
“任何公开的东西都是搜集的对象。”美国科学家联合会史蒂芬·阿福特古德说。
"Anything that is out in the open is fair game for collection, " said Steven Aftergood, of the Federation of American Scientists.
据美国科学家联合会的最新报告，MANPADS仍然是世界许多地区的威胁武器。
According to a recent report by the Federation of American Scientists, possession of MANPADS continues to be a threat in many parts of the world.
美国科学家发现，包揽大部分家务活的人与把家务活留给配偶做的人相比，血压要高出很多。
Scientists in the U.S. found those who took on most of the responsibility for running the home had significantly higher blood pressure than those who left it to their partner.
然而，就在这段时间里，美国科学家协会下载了一份该文件的副本，至今还把它放在其网站上。
However, in that time a copy of the document was downloaded by the Federation of American Scientists and remains accessible on its website.
美国科学家分析了装在虎鲨上的声学信号传送器中储存的数据，发现他们能够到各处直来直去。
US-based scientists analysed data from tiger sharks tagged with acoustic transmitters, and found that they took directed paths from place to place.
美国科学家分析了装在虎鲨上的声学信号传送器中储存的数据，发现他们能够到各处直来直去。
US-based scientists analysed data from tiger sharks tagged with acoustic transmitters, and found that they took directed paths from place to place.
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