中译英,短文翻译高手快请进!!!!急需帮助!

Topic sentence refers to the sentence which represent the paragraph's keynote . Topic sentence reflects the direction of the article.It is the guidance and limited role of the article . The meaning of the topic sentence all depends on other sentences. It has the following characteristics: It is obvious general; sentence structure is simple; other sentences are used to explain or support the expansion of the themes 1. Topic sentence may in the front of paragraphs of the article, sometimes in the middle, sometimes at the end, sometimes may not have a ready-made theme sentence.It all depends on the article itself. 2. Some paragraphs don't have topic sentence obviously, mainly through the details of the statement implicitly performance of the theme paragraphs thinking. Then, unable to find a topic sentence , you need to focus on different details of the comprehensive general description of the main points that the central idea of the paragraph

The subject sentence is refe