Degradable biological materials的用法和樣例：
例句
- This essay introduced the research progress of using soybean protein to obtain biodegradable materials in the world.
論述了國內外對大豆蛋白製取可生物降解材料的研究進展情況。 - But the bone awl such biological material is may degrade the material, then knows its age through the radiocarbon test.
但是骨錐這樣的生物材料是可降解材料，通過放射性碳測試即可知道它的年代。
