benefactor
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/ˈbenɪfæktər/
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/ˈbenɪfæktə(r)/
A person who provides financial support or assistance to others, such as an individual, a school, or a charity.
The hospital was able to expand its facilities thanks to the generosity of its benefactors.
医院能够扩展其设施,这要归功于其捐助者的慷慨。