为了调查何时、何因导致哪方离开哪方，一群生物行为学家和数学家对一种住在海边的肯特郡鸟进行了研究。
To investigate what causes who to leave whom, and when, a group of animal behaviourists and mathematicians has been studying a shore dwelling bird called the Kentish plover.
如果把它们归类成较大的单位，那么就可以确知某种未知植物属于何类群。
If they are grouped into larger units one can ascertain what group an unknown plant belongs to.
为了调查何时、何因导致哪方离开哪方，一群生物行为学家和数学家对一种住在海边的肯特郡鸟进行了研究。
To investigate what causes who to leave whom and when a group of animal behaviourists and mathematicians has been studying a shore dwelling bird called the kentish plover.
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