劍橋詞典

a three-sided area on the inner surface of the bladder (= the bag where urine collects )
（膀胱內壁的）三角區(qū)
Since most of these tumours involve the trigone, they are rarely operable . 這些腫瘤大部分發(fā)生在膀胱內壁三角區(qū)，因此極少能做手術。 返回 trigone