A poster session is held at the close of the semester [Week 15], to showcase the work of each team, having completed both 16.621 and 16.622.是什么意思_A poster session is held at the close of the semester [Week 15], to showcase the work of each team, having completed both 16.621 and 16.622.在线翻译_英语_读音_用法_例句