minute totalizer

例句：

1. 1. The teacher useda minute totalizer to keep track ofthe students' progress.
   老师使用了一个分钟总和器来记录学生们的进步。
2. 2. During thetest, the student used a minute totalizer to calculate their final score.
   在考试期间，学生使用了一分钟总和器来计算他们的最终分数。
3. 3. The engineer used a minutetotalizer to measure the amount of waterflowing through the pipeline.
   工程师使用了一个分钟总和器来测量通过管道的水量。