鸡蛋经过仔细检查，然后按重量分级。

Eggs are carefully inspected and then ___graded by weight.

老师根据清晰度和原创性给论文评分。

The teacher ___graded the essays based on clarity and originality.

在军队中，人员根据军衔和经验分级。

In the military, personnel are ___graded according to their rank and experience.