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And so far, this green sea slug is the only known animal that can be truly considered solar-powered, although some animals do exhibit some plant-like behaviors.
2019年12月四级真题（第三套）阅读 Section C
国先网英语在线翻译词典收录了4367410条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。