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他告诉大副改变船的航向偏开四个罗经点.He told the chief officer to haul the ship off four points.大副是仅低于船长的头衔.The mate is one rank below the captain.我命令大副去为船长备船.I desired my mate to see to the captain's boat....

“大副”的拼音为：dà fù...