malarial pigment

例句：

1. 1. The malaria pigments in the blood of the patient are causing him to feel dizzy and nauseous.
   病人血液中的疟疾色素正在使他感到头晕和恶心。
2. 2. Researchers have found that the malaria pigments in mosquitoes can be used as a marker for tracking disease transmission.
   研究人员发现蚊子中的疟疾色素可以作为追踪疾病传播的标志物。
3. 3. Malaria pigments are responsible for the reddish-brown coloration of some insects.
   疟疾色素是某些昆虫红色棕色颜色的原因。