“demographic cycle”概念、定义、翻译-科学时代

单词	demographic cycle
释义	社会学词汇手册 demographic cycle 人口周期
随便看	Battle of Ankara Battle of Antietam Battle of Argaon Battle of Arsuf Battle of Artemisium Battle of Ascalon Battle of Aslandaz Battle of Auneau Battle of Austerlitz Battle of Ayacucho Battle of Ayn Jalut Battle of Ayubale Battle of Azores Battle of Badr Battle of Badr battle of bands Battle of Bannockburn Battle of Barnet Battle of Bautzen Battle of Baylen Battle of Beachy Head Battle of Belleau Wood Battle of Benburb Battle of Benevento Battle of Bicocca

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。