lastometer

例句：

1. 1. The engineer used a lastometer to measure the time it took for the machine to complete its task.
   工程师使用了一个计时器来测量机器完成任务所需的时间。
2. 2.The doctor used a lastometer to ensure that the patient was receiving the correct dosage of medication.
   医生使用了一个计时器来确保病人正在接受正确的药物剂量。
3. 3.The scientist used a lastometer to record the temperature fluctuations in the room during the experiment.
   科学家使用了一个计时器来记录实验过程中房间温度的波动。