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Most thorough assessment to date of global population of ants
研究人員對全球螞蟻數進行史上最徹底的統計
Researchers have made the most thorough assessment to date of the global population of ants — insects that have colonized almost everywhere on the planet — and the estimated total is a mind-blowing 20 quadrillion of them.
研究人員對全球螞蟻的數量進行了迄今為止最徹底的評估，一種遍布地球上幾乎所有地方的昆蟲，總數令人震驚，約有2億億只。
The ants' biomass was higher than that of wild mammals and birds combined, and it reaches 20 percent of the human biomass.
所有螞蟻的生物量超越野生哺乳動物和鳥類的總和，達到了人類生物量的20%。
They have thrived since the age of dinosaurs, with the oldest-known ant fossil dating back about 100 million years to the Cretaceous Period.
自恐龍時代以來，它們就一直繁衍生息，已知最古老的螞蟻化石可以追溯到大約1億年前的白堊紀時期。
There are more than 12,000 known species of ants, which generally are black, brown or red in color and possess bodies segmented into three parts.
已知的螞蟻種類超過12000種，它們的顏色一般為黑色、棕色或紅色，身體分為三部分。
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