certificate of competency
短語詞組
- foreign certificate of competency 外籍適任證書
- COC certificate of competency 船員
- area a certificate of competency 類適任證書;A類適任證書
- river trade certificate of competency 內(nèi)河航行合格證書
- certificate of competency as master 翻譯;船長合格執(zhí)照英語 返回 certificate of competency