This of course begs the question, why the lower grades?
当然，这样又回归问题本身了，缘何分数就偏低呢？
The results found throughout the store to move back to lower grades.
结果搬回来发现整个店的档次降低了。
She was quiet, diligent, and helpful to the students of lower grades.
她娴静、勤奋，并乐意帮助低年级学生。
Lower grades are seven or eight-year-old children, first entered primary school, almost nothing.
低年级都是七八岁的儿童，刚进小学，差不多什么都不会。
For example, they were not allowed to get grades lower than A's.
例如，他们的成绩不允许低于A。
The same values in adjacent grades are assigned to the lower grade.
相邻等级中相同的值划入低等级。
The same values in adjacent grades are assigned to the lower grade.
相邻等级中相同的值划入低等级。
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