以下为句子列表：
英文: About half of those questioned had never taken part in public welfare events, and 62 percent didn't even know what public welfare work involved.
中文: 大概有一半的被采访者是从来没有参加公众福利活动，62%的人甚至不知道有关的社会福利。
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英文: In most of the advanced countries, the welfare work is well-developed.
中文: 在多数先进国家福利事业发展健全。
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