low circulation

例句：

1. 1. The low circulation in the bloodstream can lead to a weakened immune system.
   血液循环不畅可能导致免疫系统减弱。
2. 2. The doctor prescribed medication to help improve the patient's low circulation.
   医生开了药来帮助改善病人的低循环。
3. 3. Low circulation can cause fatigue and dizziness, which is why it's important to maintain good circulation.
   低循环会导致疲劳和头晕，这就是为什么保持良好循环很重要。