grader
中文来自 ECDICT
- n.
- 把东西分类别的人/机器，平路机，推土机
构词拆分
grade词根/词干
+
-er后缀
(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.
词源说明
释义（英文）
名词 Noun
- A machine used in road maintenance, construction, and mining for leveling large surfaces.
- A machine used to sort food by size or quality.
- One who grades, or that by means of which grading is done or facilitated.
- (in combination) One who belongs to a certain grade at school.