你们在不同的年级吗?
They are in the same school, but in different grades.
他们在同一所学校,但在不同的年级。
In ancient China, the promotion, demotion, rewards and punishment of officials, in different grades, were connected with the result of inspection according to the merit system.
中国古代官吏考绩制度根据对官吏的考核情况,分不同的等级,予以升降赏罚。
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