英语小笑话:Dinner is ready 晚饭准备好了

Dinner's ready
　　My cooking has always been the target of family jokes. One evening, as I prepared dinner a bit too quickly, the kitchen filled with smoke and the smoke detector went off. Although both of my children had received fire-safety training at school, they did not respond to the alarm. Annoyed, I stormed through the house in search of them.
　　I found them in the bathroom, washing their hands. Over the loud buzzing of the smoke alarm, I asked them to identify the sound.
　　It's the smoke detector, they replied in unison.
　　Do you know what that sound means? I demanded.
　　Sure, my oldest replied. Dinner's ready.