<docs> update readme

README.md

@@ -10,8 +10,24 @@
 
 <div align=center><img src = "https://github.com/anonymousException/renpy-translator/blob/main/docs/img/interface.png"></div>
 
+<div align=center><img src = "https://github.com/anonymousException/renpy-translator/blob/main/docs/img/interface.png"></div>
+
 ------
 
+## Target
+
+As you see the above translated contents. The original contents will be remained after translation.
+
+If the contents are short of the original contents(behind the "#" as comment) , translation will not take effect on them
+
+The reason why I made this tool is not to replace the real translator's work , but to help.
+
+The translated contents will be not accurate enough due to auto google translation. 
+
+So the original contents will do the effect. You can re-translate the translated contents according to the original contents. And what you modified will not be replaced during next translation.
+
+This tool also take care of the special symbols like "{}"  "[]" and "<>"   in untranslated contents , for detail you can see it on the [Features point 2](#jump_features)
+
 ## Another Docs
 
 ### Chinese
@@ -22,7 +38,7 @@
 
 You can download the latest version through https://github.com/anonymousException/renpy-translator/releases/latest
 
-## Features
+## <span id ="jump_features">Features</span>
 
 - Completely free and open-source
 - Support **special symbols** in untranslated contents like "{}"  "[]" and "<>"  , the contents in special symbols will not be translated.  Example:

README_zh.md

@@ -12,6 +12,24 @@
 
 ------
 
+<div align=center><img src = "https://github.com/anonymousException/renpy-translator/blob/main/docs/img/interface.png"></div>
+
+------
+
+## 目的
+
+正如你所见上方翻译后的内容，在翻译后被翻译的原文也会被保留
+
+如果要被翻译的内容缺少原内容(在"#"后作为注释)，那么这些内容将被跳过不被翻译
+
+我做这个工具的目的不是为了替代人工翻译，而是帮助
+
+翻译的内容通常因为机翻而不够准确
+
+因此这时原文的作用就来了，你可以根据原文重写翻译，并且你修改后的内容也不会在后面的翻译里再被替换掉
+
+本工具也处理了被翻译文本种包含特殊符号的场景，像 "{}"  "[]" 和 "<>" ，具体可以前往  [特性的第 2 点](#jump_features)
+
 ## 下载
 
 你可以通过 https://github.com/anonymousException/renpy-translator/releases/latest 下载最新版本