可分等级的反义词——有些反义词是可分为等级的，因为在一对反义词之间还经常存在有中间形式，所以它属于级别问题。

Gradable antonyms: Some antonyms are gradable because there are often intermediate forms between the two members of a pair. This is a matter of degree.

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防火玻璃按结构分等级，可分为单层防火玻璃和复合防火玻璃。

The fire-resistant glass consists of single and compound glass according to the structure.

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