or third mate assistant officer
THIRD OFFICER 三副 OR THIRD MATE ASSISTANT OFFICER 驾助 RADIO OFFICER（RADIO 报务员OPERATOR， WIRELESS OPERATOR） PURSER (CHIEF PURSER) 管事，事物长 CLERK 事物员 BOATSWAIN OR ...
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or third mate assistant officer
或者三副助理
以上为机器翻译结果，长、整句建议使用 人工翻译 。