Checkpointer
[计] 检查点, 校验点
🗣️ 情景例句
so I wouldn't lose them.
免得我弄丢了。
You can use quarters, dimes and nickels.
你可以使用2角5分、1角和5分三种硬币。
As soon as he had hung up, he went over to the workmen and told them that if a policeman ordered them to go away, they were not take him seriously.
挂上电话后，他又马上来到工人那儿，告诉他们若有个警察来让他们走开，不要把他当回事，