urinary bladder 膀胱
air bladder 鱼鳔
A: Are you feeling any pain in your bladder?
A：你的膀胱有疼痛感吗？
B: No, it seems to be functioning normally.
B：没有，它看起来功能正常。
1) 膀胱
2) 鱼鳔
3) 囊状结构
1. 膀胱
noun
1. An organ in the body that collects and stores urine.
Synonym: sac