glass ceramic active medium

例句：

1. 1. Thewindow is made of glass.
   窗户是用玻璃做的。
2. 2. She wore a glass ring on herfinger.
   她戴了一个玻璃戒指在手指上。
3. 3. The glass was shattered by thefalling tree.
   玻璃被掉落的树砸碎了。
4. 1. This ceramic vase is beautiful.
   这个陶瓷花瓶很漂亮。
5. 2. Hecollected many ceramic figurines from his travels.
   他在旅行中收集了许多陶瓷小雕像。
6. 3.The pottery has been passed downthrough generations.
   这些陶器代代相传。
7. 1. The team is activein promoting environmental protection.
   该团队积极推广环境保护。
8. 2. The new manager is very active inimproving the company's performance.
   新任经理非常积极地提高公司的业绩。
9. 3. The studentsare active participants in the class discussions.
   学生们是课堂讨论的积极参与者。