inspirational adj. 启发性的，鼓舞人心的
Q and A session 即Question and Answer Session
hit the nail on the head 说得中肯，一针见血，正中要害
You hit the nail on the head about him: he is a con artist.
你对他的批评是一针见血：他是一个骗人专家。
He hit the nail on the head when he mentioned that the company was actually facing the danger of bankruptcy.
他说那家公司实际上正面临破产的危机，真是一针见血。
dedicate to... 献(身)；把（时间、精力等）用于
He dedicated his life to science.
他献身科学。
David and Goliath battle 实力悬殊（结果显而易见）的较量
elaborate vt. 详尽阐述，发挥
Some of these points will be elaborated in the following chapter.
其中几点将在下一章作详细阐述。
spec n. 详细说明，说明书
