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(BBC News)Researchers in England and Kenya have found that older elephants help a herd to survive.
（英國國家廣播公司報道）英國與肯尼亞的研究人員發現，老象對象群的生存有幫助。
The older elephant's memories were found to help its herd survive.
根據發現，老象的記憶對其象群的生存有幫助。
Older elephants can distinguish normal sounds from dangerous sounds.
老象可以分辨出正常的聲音與危險的聲音。
This could keep the herd out of danger.
這可以讓象群避開危險。
