junior board

基本解释

Either the board or the president can appoint junior or senior officers.
董事会和董事长都有权任命高级或低级职员。
The board has injected considerable effort and resources into junior sports development.
在推动青少年体育发展方面，康体发展局注入庞大的力量和资源。
Cheng Ming, 22, a junior at East China University of Science and Technology, saw an ad on the BBS (bulletin board system), where someone offered to attend class for others for 15 yuan per class.
22岁的华东理工大学大三学生程明在校内论坛(电子公告牌系统)上看到了一则广告，发帖人宣称自己可以帮别人代课，每节课收取15元。

For instance, he was active with the New York City Ballet, chairing its junior fundraising committee, then sitting on its board.
FORBES: Renaissance Man