C:What's this? 这是什么? S:This is a new tin opener. 这是新型的开罐器, It can open a tin more quickly and safely. 能更快速安全地打开罐头. C:I see. It sounds intersting.How does it work? 原来如此, 似乎很有趣, 怎样使用的呢? S:Let me show you... 让我演示给你看...