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A member of a crew trained for underground rescue work.
Early 20th century: the first element from the name of A. B. Dräger (1870–1928), German inventor of a type of breathing apparatus.
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。