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单词	active transport
释义	active transport noun : the movement of a chemical substance by the expenditure of energy against a gradient in concentration or in electrical potential across a plasma membrane compare passive transport Example Sentences Recent Examples on the Web Now With congestion from road traffic increasing, many drivers across the continent are turning to active transport as an alternative. Flavie Halais, Wired, 30 May 2020 Word History First Known Use 1922, in the meaning defined above Medical Definition active transport noun : movement of a chemical substance by the expenditure of energy against a gradient in concentration or electrical potential across a plasma membrane
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英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。