tot up

例句：

1. 1. We need to tot up all the expenses for the trip.
   我们需要合计这次旅行的所有费用。
2. 2. The salesman tot up his sales figures for the day.
   销售员合计他当天的销售数字。
3. 3. The students tot up their homework assignments.
   学生们合计他们的家庭作业任务。