post and core material的用法和樣例：
例句
- Neutron coincidence counting is widely used in the authentication and management of nuclear material.
中子符合計數在核材料認證和管理中有著廣泛的應用。 - Earlier this year government inspectors smuggled enough radioactive material to make two dirty bombs across two different border crossings.
今年早些時候，有政府檢驗人員通過兩個邊境站走私進了足以製造兩顆臟彈的核材料。
