grading
n. 分阶段;定等级;坡度缓和; v. 定等级;减缓坡度(grade 的现在分词形式)
n.等级,坡度缓和,分阶段
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n. 分阶段;定等级;坡度缓和; v. 定等级;减缓坡度(grade 的现在分词形式)
n.等级,坡度缓和,分阶段
acknowledged birmingham obesity plasticize provolone puzzolana sphingolipid