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Petty officers are the backbone of a navy.
军士是海军的骨干。
柯林斯例句
He resented bitterly the authority of the petty officers.
他讨厌那些趾高气昂的小军官.
辞典例句
And there were 40 officers , 260 petty officers, 538 soldiers, and 332 students.
干部40名,士官260名, 义务兵538名, 学员332名.
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