chromic catgut

例句：

1. 1. The metal is chromic and can be easily scratched.
   这种金属有金属光泽，很容易刮伤。
2. 2. The chromic paint on the wall looks beautiful.
   墙上那层带有金属光泽的油漆看起来很美。
3. 3. The chromic material is used in many industrial processes.
   这种金属材料在许多工业过程中被使用。