Checkpointer
[计] 检查点, 校验点
🗣️ 情景例句
What's the problem?
什么问题啦？
Truth's best ornament is nakedness.
不加装饰是真理的最好的装饰。
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。