urethra

n (pl 复数作 ~s or, in scientific use, 科技用语复数作 -rae / -ri:; -ri/) (anatomy 解) tube by which urine passes from the bladder out of the body 尿道. =>illus at male 见 male 插图.

upturned, upward, upward (also upwards / -wEdz; -wLdz/), upward mobility, upward(s), upwards, upwards of, upwind, uranium, urban, urbane, urbanely, urbanity, urbanization, urbanisation, urbanize, urbanize, urbanise, urchin, Urdu, urea, ureter, urge, urge sb to do, urge sb. on, urged, urgency, urgent, urgently, uric, urinal, urinary, urinate, urine, urn, us, USA, usable, USAF, usage, use, use up,