graders 是 grader 的複數graderKK [ˋgredɚ] /ˈɡɹeɪdɚ/名詞1評分者、閱卷者、改考卷的人美式The professor hired two graders to help with the midterm exams.教授僱了兩名閱卷者協助批改期中考。2年級學生美式,多用於複合詞My niece is a fifth grader at the school down the street.我姪女是街尾那所學校的五年級學生。3平路機、整平機工程A grader smoothed the dirt road before the crew laid asphalt.工人鋪柏油前,先用平路機把土路整平。4分級機、篩選機機械The packing house uses a grader to sort apples by size.包裝廠用分級機依大小把蘋果分類。