apply a topcoat
clear topcoat
protective topcoat
glossy topcoat
A: Does the wood need more treatment?
A：这块木头还需要进一步处理吗？
B: Yes, it needs a final topcoat to seal it.
B：是的，它需要涂上一层最后的保护漆来密封它。
1) 最外层保护层
2) 装饰性饰面
3) 清漆涂层
1. 最外层涂料或清漆
noun
1. A final layer of paint, varnish, or other substance applied to a surface for protection or decoration.
Synonym: coating, finish, varnish