血液循环

• blood circulation

例句

1. 血液循环不良会引起像人体疲劳这样的种种症状。
   Bad circulation can cause various symptoms such as tiredness.
2. 血液循环不良会引起人体疲劳。
   Bad circulation can cause tiredness.
3. 哈唯发现了血液循环。
   Harvey discovered the circulation of the blood.