?选择研修
... [select and send] 挑选推荐 [take as an elective course] 选择研修 [sample;sampling] 挑选的样品 ...
?选修
... 选项 option 选修 take as an elective course 选修课程 elective ...
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。