思路：总写科学的重要作用，然后具体举例描述科学的作用，最后肯定科学的作用。
正文：
Science is a very important in the process of evolution. It helps human being to breakthrough bottle neck of technology.
科学在进化过程中起着非常重要的作用。它有助于人类突破技术瓶颈。
For example, with the help of science, human being is able to set foot on the moon nowadays and is trying to expand the exploration to the outer space, which could not ever be thought of in the ancient times.
例如，在科学的帮助下，人类现在能够踏上月球，并试图将探索扩展到外层空间，这在古代是无法想象的。
Science is helps to improve life quality. The invention of electical appliance such as washing machine, microwave oven and baking machine shorten the time we spent on housework and provide us more time to enjoy life.
科学有助于提高生活质量。洗衣机、微波炉、烤箱等电器的发明缩短了我们做家务的时间，也为我们提供了更多的时间来享受生活。
Therefore, it's very beneficial for us to study on science and devote our time and energy to develop new technologies. I am sure that human being will gain more and develop more with the help of science.
因此，研究科学，投入时间和精力开发新技术，对我们是非常有益的。我相信，在科学的帮助下，人类将获得更多，发展更多。
