Before I describe great scientific advances in the next 30 to 50 years, we had = have better = to deal with a = an invention that is = has a similar concept. I am sure to say that the appliance = appliances is = are the best invention = inventions especially a washing machine = machines. The reason why I think like = for that is those appliance = appliances help to reduce time for doing housework. It leaded that women = Women could now spend more time to = for study or work. As a result, gender equality was came true = happened because of the appliance = appliances. In the same terms of saving time = Also, smartphone = smartphones is = are quite powerful, so it is also a great invention. Considering great scientific advances in the next 30 to 50 years, two things can be that matter = considered. one = One is a self-driving car and other = another is a robot with artificial intelligence. Although transportation has been developed dramatically, Still = still, people need to spend some time for driving. Also, driving by people is not perfect, so we can hear a lot of car accidents. If self-driving car = cars become a common = reality, we would expect = can saving = save a lot of time, reduce the car accident = accidents that controlled by the main computer and decrease the transpartation and delivery fee = fees. As many people = we all know, the robot = robots with artificial intelligence will change all of human life. Most of a regular works = basic jobs will be done by the robot = robots. Many dangerous works also = jobs will also be dealt with by robots.

*Try to make your answers a little bit short.