排尿困难

例句：

1. 1. He had to sit for hours while his bladder was full.
   他的膀胱满了，不得不坐了几个小时。
2. 2. She experienced a sudden urge to urinate but couldn't find the right spot.
   她突然感到想上厕所，但找不到正确的位置。
3. 3. After surgery, he was advised to avoid sitting for too long and to drink plenty of fluids.
   手术后，他被建议避免长时间坐着，并多喝水。