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A protruding arm on a sewing machine, designed to facilitate the sewing of tube-shaped items such as sleeves and trouser legs.
1940s; earliest use found in The New York Times.
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。