1ADJ-GRADED [usually verb-link ADJ]有助益的;有帮助的;起作用的 Someone or something that is instrumental in a process or event helps to make it happen. 有助益的;有帮助的;起作用的
In his first years as chairman he was instrumental in raising the company's wider profile. [+ in]
他任董事长的最初几年为提升公司的知名度起到了积极的推动作用。
Jesse Jackson was instrumental in the release of some of the hostages.