pyloric valve

例句：

1. 1. The pyloric valve is a crucial part of the digestive system that regulates the flow of food and gases through the stomach.
   幽门瓣是消化系统的关键部分，它调节通过胃的食物和气体流动。
2. 2. During surgery, the pyloric valve is temporarily closed to prevent leakage of gastric contents into thesmall intestine.
   在手术期间，幽门瓣暂时关闭以防止胃内容物流入小肠。
3. 3. The pyloric valve plays an important role in maintaining the balance between acid production and neutralization by the stomach.
   幽门瓣在维持胃酸生产与胃液中和之间平衡方面起着重要作用。