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collar

Collar may refer to: Human neckwear Clerical [神职人员的] collar (informally dog collar), a distinctive collar used by the clergy of some Christian religious denominations [宗教派别] Collar (clothing), the part of a garment that fastens around or frames the

class

In biological classification, class (Latin: classis, 纲) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.[a] Other well-known ranks in descending order of size are life, domain, kingdom, phylum, class, order, family, genus, and spec