“opt-up”概念、定义、翻译-科学时代

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。

单词	opt-up
释义	人力资源管理词汇手册 opt-up （对福利项目的）自愿升级
随便看	letter of credit letter of credit letter of credit letter of credit letter of credit at sight letter of credit (L/C) letter of credit (L/C) letter of credit (L/C) letter of credit (L/C) letter of credit (L/C) letter of credit--letter of credit (L/C) letter of credit--letter of credit (L/C) letter of credit--letter of credit (L/C) letter of credit--letter of credit（L/C） letter of credit--letter of credit（L/C） letter of credit terms letter of credit with red clauses letter of credit with T/T reimbursement clauses letter of credit（L/C） letter of credit（L/C） letter of death letter of decision letter of denization letter of deposit letter of deposit

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