A root is often seen as part of word; it can never stand by itself although it bears clear, definite meaning; it must be词根被看作是词的一部分，它有清楚、明确的意思，但不能单独存在，它必须和另一个词根或词缀组合构成单词。
Supervising agencies for animal epidemic prevention shall carry out quarantine of animals slaughtered in slaughterhouses动物防疫监督机构对屠宰场（点）屠宰的动物实行检疫并加盖动物防疫监督机构统一使用的验讫印章。