名词
中文翻译：下石炭纪
同义词：
['lower carboniferous period', 'lower carboniferous stage']
例句：
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1. The Lower Permian was a time of great geologicalactivity.
下石炭纪是一个地质活动非常活跃的时代。
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2. The Lower Permian is known for its abundant marine life.
下石炭纪以其丰富的海洋生物而闻名。
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3. The Lower Permianis often associated with the rise of earlymammals.
下石炭纪常常与早期哺乳动物的崛起联系在一起。