It wasn't until the 1990s, after decades of study in the 20th century, that it was determined how it was created.
几十年的研究已经指向了雀类大脑中负责这种行为的结构,也就是众所周知的鸣声核。
Decades of research have identified the structure of the brain responsible for this behavior in finches, known as the vocal nucleus.
经过几十年的研究,科学家们还不确定风暴期间,磁力线重联究竟发生在哪里。
After decades of study, scientists aren't sure where exactly magnetic reconnection occurs during storms.
几十年的研究表明,在学校呆的时间最长的孩子的视力最差。
Decades of studies show that children who spend the most time at school have the worst eyesight.
几十年的研究表明,高温加上高压会逐渐将高密度的液态氢转化为导电流体。
Decades of research have revealed that high temperatures combined with high pressure progressively transform dense fluid hydrogen into an electrically conducting fluid.
几十年的研究表明,我们有能力自动忘记一些事情,但我们的大脑是如何做到这一点仍然不能确定。
Decades of research has shown that we have the ability to voluntarily forget something, but how our brains do that is still being questioned.
人们已经对其复杂性进行了几十年的研究,然而其中一些功能仍然未知。
Its seeming complexity has prompted decades of study, although some of its functions remained unknown.
但尽管经过几十年的研究,一个孤子从来没有被观察到的这样一种依赖形式的几乎是寄生的行为方式。
But despite decades of study, a soliton has never been observed behaving in a dependent- almost parasitic- manner.
几十年的研究表明,当人们说话(甚至想象说话)时,大脑中会出现明显的活动模式。
Decades of research has shown that when people speak-- or even imagine speaking-- telltale patterns of activity appear in their brain.
几十年的研究发现,磁性和电能在这种材料中表现得很奇怪。
Decades of research had found that magnetism and electricity behaved strangely within this material.
Yet, even after decades of research, Cooper and other lightning experts readily admit that there are many unresolved questions?
几十年的研究已经警告了自动驾驶舱中人类注意力的广度.
Decades of research have already warned about the human attention span in automated cockpits.
值得庆幸的是,几十年的研究表明认为能力不变的看法是完全错误的,人的各种能力都是可以塑造的。
Fortunately, decades of research suggest that the belief in fixed ability is completely wrong- abilities of all kinds are profoundly malleable.
经过几十年的研究,人们逐渐认识到,PepT1可以被多种因素在转录和转录后水平调控。
After decades of research, it has been recognized that PepT1 could be regulated at the transcriptional and post-transcriptional levels by numerous factors.
她几十年的研究表明,我们已经足够了,这就是生活的美。
What her decades of research suggest is that we are all enough and that is the beauty of life.
尽管过去几十年的研究和几十亿英镑的资金,化妆品行业一直在努力研发,都只是逆转老化的面霜和乳液。
Despite decades of research and billions of pounds of funding, the cosmetics industry has struggled to develop creams and lotions that reverse ageing.
经过几十年的研究和开发,NRL开发出了一种全新的透明防弹材料,并且可以被塑造成任何形状。
After decades of research and development, the NRL has created a transparent, bulletproof material that can be molded into virtually any shape.
经过几十年的研究和发展,我们已成为业内最有经验的公司之一。
After decades of research and development, we have become one of the most experienced companies in the industry.
几十年的研究表明,当人们说话(甚至想象说话)时,大脑中会出现明显的活动模式。
Decades of research has shown that when people speak(or imagine speaking) tell-tale patterns of activity appear in their brain.
羰基镍的生产工艺并不是一项新技术,已有近百年的研究历史,我国亦有几十年的研究时间。
Nickel carbonyl production process is not a latest technology, nearly a hundred years of the study of history,there are decades of research time.
长久以来,使用工具一直被视为是人类独有的行为,但几十年的研究显示,这根本就不是真的。
For a long time,tool use was considered a quintessentially human activity, but decades of research has exposed that as simply untrue.
经过几十年的研究,仍然没有确凿的证据表明增重这种影响是真实的。
But after several decades of research, there still isn't any conclusive evidence that the effect is real.
尽管经过了几十年的研究,但造成一个冰河期之开始的条件仍然不清楚。
Despite decades of research, the conditions responsible for the inception of a glacial period have remained unclear.
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