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(单词翻译:双击或拖选)
Sheep With Personality “To boldly go where no man has gone before,” are famous words from the science fiction series Star Trek1. Being bold does tend to help people be successful in life, but what about bighorn sheep? Well, it seems Canadian scientists have found that if you’re a bighorn ram2, a bold personality can be a good thing. Scientists can’t measure an animal’s success by finding how much money it earns. Instead, they measure how successfully it reproduces. Bighorn sheep rams3 compete in order to breed with females. Large size and high dominance status usually determine a male’s success. Older rams between six and twelve years are typically the most successful, but paternity tests have shown that some younger rams also father offspring. So what’s going on? Scientists believed successful younger males might have bolder personalities4, but measuring personality traits is more complicated than counting offspring. To measure boldness, researchers trapped animals in plywood enclosures and measured how much of a fight they put up when they were weighed and measured. Needless to say, sheep wrestling was not the safest way to gather data, but they found sheep had quite different personalities. At one end of the spectrum5, some sheep were well behaved and sat while being measured. At the other end were rams like Psycho who was very aggressive every time he was trapped. After all that wrestling, scientists did find that young rams who fathered offspring were the most combative6, boldest males. Unfortunately, bold rams tended to die earlier than their more docile7 peers because they took more risks. So, going boldly is not always the best choice.
1 trek | |
vi.作长途艰辛的旅行;n.长途艰苦的旅行 | |
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2 ram | |
(random access memory)随机存取存储器 | |
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3 rams | |
n.公羊( ram的名词复数 );(R-)白羊(星)座;夯;攻城槌v.夯实(土等)( ram的第三人称单数 );猛撞;猛压;反复灌输 | |
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4 personalities | |
n. 诽谤,(对某人容貌、性格等所进行的)人身攻击; 人身攻击;人格, 个性, 名人( personality的名词复数 ) | |
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5 spectrum | |
n.谱,光谱,频谱;范围,幅度,系列 | |
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6 combative | |
adj.好战的;好斗的 | |
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7 docile | |
adj.驯服的,易控制的,容易教的 | |
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