Robots bring a lot of convenience to our life. The sweeping robots can help us clean the floor so that we can have more time to work and rest. Coffee shops also use robots to make coffee to save manpower, and the robots can carry out the operation process more strictly, so the coffee they make will have a better taste. Chatbots for online shopping can automatically answer customers' frequently questions, so that customers don't have to wait anxiously. This paragraph is unified.