本 Summit 2A - ユニット 2 - レッスン 4

(of a person or organization) using a great portion of their income in order to provide social useful services

慈善活動

activity that requires physical or mental effort

仕事（人間の活動）

someone or something that gives money, clothes, etc. to a charity for free

恩人

a wealthy person, often a celibrity, who donates money and puts time and effort in order to help make life better for other people

博愛家

involved in or related to helping people who are in need to improve their living conditions

人道的

a person who tries to bring about political or social change, especially someone who supports strong actions such as protests, etc.

社会変革をもたらす者