经PMS授权的轮机长是船上实施PMS的主管人员，其职责：
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TheteachersaidthatJane________workharderthefollowingsemester.
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翻译：WeadvisedyouinourletterofDec.1,thatwewouldliketoplaceatrialorderwithyoufor50piecesFlyingPigeonBicycles.