点击下方单词,选择对的这个单词
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1. 纤维素Cellulose is a substance that exists in the cell walls of plants and is used to make paper, plastic, and various fabrics and fibres.
1. a polysaccharide that is the chief constituent of all plant tissues and fibers
多通过句子记忆单词,而不是单独死记硬背。