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1·You can see these actions demoded in the video below.

你可以看到这些行动展示在下面的视频中。

2·The germanium circuits demoded by Purdue University engineer Peide ye and colleagues suggest that the material could be ready for commercialization in a few years.

普渡大学工程师Peide Ye与其同事所展示的锗电路，意味着锗这种材料在几年内有望实现商业化。