hypoperistalsis

例句：

1. 1. The patient's blood pressure was high, and it was suspected that there might be a retrograde flow in the artery.
   病人血压高，怀疑动脉中有逆流现象。
2. 2. During the surgery, the surgeon noticed a retrograde flow of blood into the heart.
   手术过程中，外科医生注意到血液逆流进入心脏。
3. 3. The researcher found that the retrograde flow of nutrients in the plant could explain its rapid growth.
   研究者发现植物中营养物质的逆流流动可以解释其快速生长的原因。