dose counter

例句：

1. 1.The doctor uses a dose counter to measure the amount of medication.
   医生使用剂量计数器来测量药物的量。
2. 2.The patient needs to take his medicine at regular intervals, as per the instructions on the dose counter.
   病人需要按照剂量计数器上的说明，定期服用他的药。
3. 3. The nurse carefully checks the dose counter before administering the medication.
   护士在给药前仔细检查剂量计数器。