词汇	chip scrtch
释义	chip scrtch 屑痕
随便看	external dynamic mechanism external dynamics external dyspnea external ear External ear abnormalities External ear canal External ear conductive hearing loss external ear deformity external ear obstruction external ears external-ear squeeze external earth-fault external ear trauma external economic external economical openness external economic cycle external economic expansion external economic nature external economic risk external economics external economics of scale external economic variable external economies external economizer external economy