Yet, as any general knows, establishing a beachhead is not the same thing as conducting asuccessful, long-term occupation.
但是,众所周知,建立一个滩头阵地不同于成功地进行一次长期占领。
Argentine-ant colonies sometimes collapse suddenly, and with no obvious explanation.
阿根廷蚂蚁的入侵有时突然毫无缘由地停止。
In a paper just published in Biology Letters, a group of researchers at Victoria University ofWellington, in New Zealand,
在最近发表在《生物书简》上的一篇文章中,新西兰惠灵顿维多利亚大学的一组研究人员,
led by Meghan Cooling and Phil Lester,
由梅根?库灵和菲尔?莱斯特领导,
describe their attempts to study such disappearances systematically.
描述了他们对这种系统性消失的研究。
The researchers examined 150 sites across the country where Argentine-ant nests had beenrecorded.
研究者们考察了全国范围内150个已经被记录下来的阿根廷蚂蚁据点。
At 40% of them they found that the ants had vanished.
他们发现其中的40%已经消失,
At many of the other sites, ant numbers were much reduced,
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