mask etch

例句：

1. 1.The artist carefully masked the surface of the wood before etching it with a needle.
   艺术家在用针刻木头之前，小心翼翼地覆盖了表面。
2. 2. The craftsman used a chisel to etch intricate designs into the stone.
   工匠用凿子在石头上刻出复杂的图案。
3. 3. The sculptor applied a layer of plaster and then carefully masked and etched the design.
   雕塑家先涂一层石膏，然后小心地覆盖和蚀刻设计。