volunteerismn.
英 ,vɒlən'tɪərɪz(ə)m | 美 ,vɑlən'tɪr,ɪzəm
中文n. 志愿精神；志愿服务
词根词源
volunteerism (n.)1844, with reference to armed forces; from volunteer + -ism. In reference to volunteer labor in community activities, by 1977.
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