nonmetallic materials的用法和樣例：
例句
- Even nonmetallic materials are dangerous to touch at these low temperatures.
在這種低溫下，甚至接觸非金屬材料也是危險的。 - Nonmetallic materials are those materials such as woods, plastics, rubbers, epoxy resins, ceramics and diamonds that do not have a metallic base.
非金屬材料是指如木頭，塑料，橡膠，環氧樹脂，陶瓷及金剛石等那些不含有金屬基材的材料。
