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jumpmaster ['ʤʌmp'mɑ:stə] n
skydive. 跳伞组长; 跳伞指导员组长
 English thesaurus
jumpmaster ['ʤʌmp'mɑ:stə] n
mil., USA The assigned airborne qualified individual who controls paratroops from the time they enter the aircraft until they exit (JP 3-17)