A：What's this, I wonder?
我想知道这是什么?
B：I'm not sure.Let me have a look.....It could be a coffee grinder.
我不肯定。让我看看…它可能是咖啡研磨器。
A：A coffee grinder?
咖啡研磨器?
B：Yes,it must be used for grinding coffee beans.
是的，它一定是用来磨咖啡豆。
A：Oh,that would be very useful.
噢，它应该很有用。