blood microaggregate

例句：

1. 1.The doctor found a blood microaggregate in the patient's urine.
   医生在病人的尿液中发现了血微颗粒。
2. 2.The study found that blood microaggregate could be a sign of infection.
   研究发现血微颗粒可能是感染的迹象。
3. 3. Blood microaggregate can be formed when blood clots or platelets clump together.
   血微颗粒可以在血液凝固或血小板聚集时形成。