| 单词 | hardener |
| 释义 | hardener /hahr"dn euhr/, n. 1. a person or thing that hardens. 2. a substance mixed with paint or other protective covering to make the finish harder or more durable. 3. Photog. a chemical used to raise the melting point of an emulsion. [1605-15; HARDEN + -ER1] |
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