Speech-recognition software

    At a recent Sacramento PC User's Group meeting, a company was demonstratingits latest speech-recognition software.
    A representative from the company was just about ready to start the demonstration¹ and asked everyone in the room to quiet down.
    Just then someone in the back of the room yelled,"Format C: Return."Someone else chimed in (插嘴）:
    "Yes, Return"Unfortunately, the software worked.

1 demonstration   

n.表明，示范，论证，示威

参考例句：

• His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
• He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。