iBT TOEFL Topic Vocabulary Breakthrough Unit 025
Author: Li Xiaolai
25. Paints are formed by mixing a pigment and a binder, a fluid vehicle, such as linseed oil, that solidifies when exposed to air. A varnish is a transparent solution that solidifies into a protective coating. Opaque and colored varnishes are called lacquers.Author: Li Xiaolai
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