hematinometer

例句：

1. 1. The hematinometer showed that she had a low white blood cell count.
   血液计数器显示她的白细胞计数很低。
2. 2. Doctors use hematinometers to check the health of patients' blood.
   医生使用血球计数器来检查病人的血液健康状况。
3. 3. He was worried about his hematinometer readings, which were consistently high.
   他对他的血液计数读数感到担忧，这些读数一直很高。