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A week during which people are encouraged to make a pledge to donate to charity, confirm a pledge to join a fraternity, etc.
Early 20th century; earliest use found in The Washington Post.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。