帽子，手套，祖母绿：这些似乎为她生来要扮演的角色准备的必不可少的道具。
Hats, gloves, emeralds: these were props for a role she seemed born to play.
事实是金融公司在我们经济中扮演着必不可少的角色。
The fact is, financial firms play an essential role in our economy.
接受那些我们不能用计算机所做的，在形成我们能做什么的一个鉴定中扮演着必不可少的角色。
Accepting what we cannot do with computers plays an essential role in forming an appreciation of what we can do.
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