这位男孩能辨别出音调的细微变化.This boy can discriminate minute variations in tone.我只能大致辨别出对面起伏不平的峭壁轮廓.I could but just discern the frowning line of the opposite cliffs.你们一听爱尔兰人或者约克郡人的土音,就能辨别出他是哪里的人.You can spot an Irishman or a Yorksh...