wagon checker

例句：

1. 1. The wagon checker was responsible for ensuring the safety of the passengers.
   马车检查员负责确保乘客的安全。
2. 2. The wagon checker had to make sure that all the horses were properly harnessed before they set off.
   马车检查员在出发前必须确保所有的马匹都系好缰绳。
3. 3. The wagon checker was in charge of checking the condition of the wagons before they were loaded onto the train.
   马车检查员负责在火车上装载之前检查马车的状况。