grader的英语例句
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She felt like a fifth-grader who had snitched on a classmate.
她觉得自己就像一个告发了同班同学的五年级学生。
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Paul is a bright, athletic fourth - grader.
保罗是个伶俐 、 爱活动的四年级学生.
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Again, after the lumber has been separated, the grader assigns a grade.
木材分开后, 分级工再次标记等级.
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