“自由运费”概念、定义、翻译-科学时代

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随便看	demographic census demographic characteristics demographic composition demographic condition demographic cycle demographic data demographic distribution demographic edition demographic effectiveness demographic environment demographic environment demographic explosion demographic indicator demographic inventory demographic marketing demographic model demographic model demographic phenomena demographic potential demographic process demographic quantitative study demographic rate demographic research demographic revolution demographic revolution

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。