让我给你展示一下相机是如何工作的。

Let me give you a ___demonstration of how the camera works.

我们在节日上参加了一场烹饪展示。

We attended a cooking ___demonstration at the festival.

我们的一些工人将向您展示他们如何一步步生产一些世界著名的戒指和项链。

Some of our workers will give you a ___demonstration on how they produce, step by step, some of the world's best-known rings and necklaces.