classing
词形变化：
动词过去式: classed | 动词过去分词: classed | 动词现在分词: classing | 动词第三人称单数: classes |
同义词：
categorize | organize | group | arrange | catalogue | catalog | grade | sort | rank | class | assort | order | pigeonhole | coordinate | brand | rate | file | relegate | separate | sort out |
反义词：