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(单词翻译)
Back in the late 1800s, detectives first started using fingerprints1 to identify criminals. More recently, during the past few decades, DNA2 has become an important tool for crime scene investigators3. Now, bacteria may have their day. Hand bacteria, that is–as in the unique mix of bacteria that live on a person’s hands. The human body is teeming4 with bacteria. In fact, there are more bacterial5 cells in our bodies than human cells. Researchers have found that our hands harbor around 150 bacterial species. But the specific variety of bacteria is largely unique to each hand. Only about 13 percent of bacteria found on a given hand is shared with any other hand.
收听单词发音
1
fingerprints
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| n.指纹( fingerprint的名词复数 )v.指纹( fingerprint的第三人称单数 ) | |
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2
DNA
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| (缩)deoxyribonucleic acid 脱氧核糖核酸 | |
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3
investigators
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| n.调查者,审查者( investigator的名词复数 ) | |
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4
teeming
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| adj.丰富的v.充满( teem的现在分词 );到处都是;(指水、雨等)暴降;倾注 | |
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5
bacterial
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| a.细菌的 | |
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