expositorial

例句：

1. 1. The teacher gave anexposition on the topic of global warming.
   老师对全球变暖这个话题进行了阐述。
2. 2. Thebook is an excellent expositorypiece that explains complex concepts in a clearand concise manner.
   这本书是一本极好的阐释性作品，以清晰和简洁的方式解释了复杂的概念。
3. 3. The museumexhibits various objects thatare meant to be expository rather than purely decorative.
   博物馆展出的各种物品旨在阐释而非仅仅装饰。