名词
中文翻译：Unknown
同义词：
['Pleistocene epoch', 'Pleistocene era', 'Pleistoceneage']
例句：
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1. Thepaleolithic period is characterized bythe use of stone tools and hunting formeat.
旧石器时代的特点是使用石器和狩猎肉类。
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2. During the Paleolithic period, humans first domesticated animals to help with food production.
在旧石器时代，人类首先驯化动物以帮助食物生产。
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3. The discoveryof fossils in the Paleolithic period has helped scientists understand theevolution of early humans.
在旧石器时代发现化石有助于科学家了解早期人类的进化。