薄木片粘在一起制成胶合板的任何一层薄木板
Any of the thin layers glued together to make plywood.
洪水退後，田野上留下一层厚泥。
A thick deposit of mud lay on the fields when the flood went down.
穿几层薄的衣服总比穿一层厚的衣服暖。
Several thin layers of clothing will keep you warmer than one thick one.
