问题描述：
英语翻译
出处 剑桥雅思第三册 文章标题 A Remarkable Bettle：...farmers required a variety of species with overlapping periods of activity
出处 剑桥雅思第三册 文章标题 A Remarkable Bettle：句子：...farmers required a variety of species with overlapping periods of activity.
出处 剑桥雅思第三册 文章标题 A Remarkable Bettle：...farmers required a variety of species with overlapping periods of activity
出处 剑桥雅思第三册 文章标题 A Remarkable Bettle：句子：...farmers required a variety of species with overlapping periods of activity.
问题解答：
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