urethran.尿道
urethra mucosa尿道粘膜
Urethra cancer尿道癌
urethra narrow尿道狭窄
urethral curet尿道刮匙
urethral knife尿道刀
urethral plate尿道板, 尿生殖板
urethral sound尿道探子
urethral gland尿道腺
urethral clamp阴茎夹, 尿道夹
urethral crest尿道嵴