| 词汇 | petty-officer |
| 释义 | petty officer noun[ C ] ukus(written abbreviationPO) a rank in a navy, below the officers but above the ordinary sailors: 海军军士 Chief Petty Officer（美国海军）三级军士长;（英国海军）上士 Ranks in the Navy able seaman admiral commander commodore fleet admiral midshipman PO quartermaster rear admiral seaman seamanly sub lieutenant |
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