商业
补充性医疗保险
补充性医疗计划
This supplemental policy, known as Medigaps, can only be purchased at select times depending on the state of residence.
FORBES: What should I do to change my Medicare Advantage plan before time runs out February 14?
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。