那响声象一架飞机飞过头顶。
北美洲鸣鸟，其叫声象猫。
North American songbird whose call resembles a cat's mewing.
方法：对62例经手术、胃镜活检病理证实的胃癌声象图进行分析。
Method: Ultrasonographic study was carried out in 62 cases of gastric carcinoma confirmed by both surgery and pathological biopsy.
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