求大神帮我把一段话翻译成英文，跪谢，论文要用的。如下

Therefore, it is necessary to study the problems of the commercial housing sale system in our country and to put forward the rationalization suggestion.. In this paper, we first introduce the current situation of the development of the commercial housing pre-sale system, and the use of principles of economics explanation of the commercial housing pre-sale, on this basis, through the analysis, put forward the problems existed in the commercial housing pre-sale system. Followed by a detailed introduction of the foreign typical countries (the United States, Japan, Germany) in the pre-sale of commercial housing system, summarizes the characteristics and advantages, using comparative analysis, summed up the place of our country draw lessons from a meaning. Finally aiming at the problems existed in the commercial housing pre-sale system, combined with the experience of the United States, Japan, Germany and other countries reference, puts forward some reasonable countermeasures and suggestions for the improvement of China's commercial housing pre-sale system.