louisiana purchase louisiana creole french louise patten louisa may alcott louis xvi louis xv louis xi louis v louis the pious [历史学]虔诚者路易louis pasteur louis palmer louis le faineant louis glass louis armstrong lough (n.) lough n.湖；海湾loudspoken a.大声说的loudspeaking telephone set [经济学]扬声电话机loudspeaking 扬声loudspeakers 扬声器