sexual material
英
美
- material n.材料；原料；素材；资料；题材；物质adj.物质的；重要的；关键的；肉体上的；实质性的
- sexual adj.性的；性欲的；有性生殖的；性别的
- When a rotor is cleaned, it will need to be re-burnished again to re-deposit the friction material onto the surface.
当碟盘被清洗后，它将需要重新磨合以使摩擦性材料重新沉积到碟盘表面。
- The textbook contains more explanatory material than models and is therefore hard to plough through.
这本教科书中，说明性材料多于范文，所以难以阅读。
