Graders
分级机\\n分类机\\n…年级学生\\n[建] 平地机（grader的复数）
🗣️ 情景例句
Does your wife work?
你太太工作吗？
I'd like to speak to Mr. Jack.
我要和杰克先生讲话。
When did you come to China?
你什么时候来到中国？