conscientious service
认真的服务
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Mr. Kampelman was a conscientious objector during World War II and did alternate service by participating in a government-funded starvation study that saw him drop in weight to 100 pounds from 160.
WSJ: Max Kampelman, Cold War Arms Negotiator, Dies at 92
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