key figure

基本解释

Bohr’s model would win him the 1922 Nobel Prize, but its limitations inspired the search for a purely quantum physics. A key figure in this investigation was Werner Heisenberg.
波尔的模型会为他赢取1922年诺贝尔奖，但其局限激发了对纯粹量子物理学的探索，做这项研究的一个关键人物就是维尔纳·海森堡。
The ambitious project enjoys the backing of one key figure: President Nicolas Sarkozy whose government is digging deep into its pockets to make the dream of a world-class university a reality.
这个雄心勃勃的项目得到了一个关键人物的支持：法国总统萨科齐。他领导的政府正不惜斥巨资，以让法国拥有一所世界顶级大学的梦想成为现实。
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Why is that a key figure?
为什么这个数字非常关键？

Homeland Security Secretary Janet Napolitano, a key figure behind this week's aid package, will visit Mexico early next month along with U.S.
One well-respected figure says the key is bringing more minorities into the profession.
Republican political strategist Terry Nelson agrees that Pelosi was the key to passing health care reform, but points out that she is a polarizing figure for many conservatives.

And who is the biggest car dealer of them all and a key figure in Avtovaz?
FORBES: Godfather of the Kremlin?