“protection in old age”概念、定义、翻译-科学时代

单词	protection in old age
释义	人口学词汇手册 protection in old age 老年保护
随便看	BT (BitTorrent) BT (BitTorrent) BT--BT (BitTorrent) BT--BT (BitTorrent) BT--BT（baby talk） BTC (business-to-consumer) BTCF (before-tax cash flow) BTF （barrels of total fluid） BTIRR (before-tax internal rate of return) BTL ad agency BTL advertising BTL (below-the-line) BTL cost BTL media BTN BTN (Brussels Tariff Nomenclature) BTN--BTN (Brussels Tariff Nomenclature) B to B B to B--B to B (business-to-business) BTOB (business to business) B to B (business to business) B to B (business-to-business) BTObuilt BTObuilt--BTO（built B to C

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。