iron powder

例句：

1. 1. The iron powder wasused to make the nail polish.
   铁粉被用来制作指甲油。
2. 2. Theiron powder was mixed withwater to form a paste.
   铁粉与水混合形成糊状物。
3. 3. The iron powder was used as aningredient in the paint.
   铁粉作为油漆的原料使用。