A corroded surface of a rusty metalnail appears like an alien environment when enlarged 600 times.
生锈铁钉遭到侵蚀的表面放大600倍后，好似外星环境。
2
Clothes don't take the collar, don't wear hat with a sweater, also do not have this nail or metal like in clothes.
衣服呢不要带领子，不要穿带帽子的卫衣，另外不要有这种柳钉或者金属一类的东西在衣服上。
3
We can produce all kind of button like circular button, corn, bump nail, metal pearl, button bottom with the material of iron, copper, stainless steel, alloy.