diff --git a/translator/app.py b/translator/app.py
index 773cd33..ced9e3b 100644
--- a/translator/app.py
+++ b/translator/app.py
@@ -15,20 +15,14 @@ class TranslatorApp:
 
     def __init__(self, config_path: str = 'config.yaml'):
         self._config = parse_config(config_path)
-        self._lang_directions = {
-            '英->中': ('英文', '正體中文', '台灣地區用語'),
-            '中->英': ('正體中文', '英文', '自然通順'),
-            '中->日': ('正體中文', '日文', '自然通順'),
-            '日->中': ('日文', '正體中文', '自然通順')
-        }
         self._chain = self._prepare_chain()
 
     def _prepare_chain(self) -> LLMChain:
         """Prepare the chain for translation"""
         template = (
             '你是專業的翻譯人員，請判斷這段句子「{input_text}」的語言是否為{source_lang}，若非的'
-            '話則請回傳一模一樣的句子，若是的話則請將該句翻譯成{target_lang}，並且符合{rule}（僅回'
-            '傳翻譯結果即可）。'
+            '話則請回傳一模一樣的句子，若是的話則請將該句翻譯成{target_lang}，並且符合{description}'
+            '（僅回傳翻譯結果即可）。'
         )
         llm = ChatOllama(
             base_url=self._config['app']['ollama_url'],
@@ -36,59 +30,56 @@ class TranslatorApp:
             temperature=self._config['app']['ollama_temperature'],
             max_tokens=self._config['app']['ollama_max_tokens'],
             top_p=self._config['app']['ollama_top_p'],
+            keep_alive=self._config['app']['ollama_keep_alive'],
             stop=None
         )
         prompt = PromptTemplate(
-            input_variables=['input_text', 'source_lang', 'target_lang', 'rule'],
+            input_variables=['input_text', 'source_lang', 'target_lang', 'description'],
             template=template
         )
         return prompt | llm
 
     def run(self) -> None:
         """ Run the Streamlit app """
+
         st.set_page_config(
             page_title=self._config['app']['page_title'],
             page_icon=self._config['app']['page_favicon_path'],
         )
         st.title(body=self._config['app']['page_title'])
+
         direction = st.radio(
-            label='Direction',
-            options=list(self._lang_directions.keys()),
+            label='語言',
+            options=list(self._config['app']['lang_directions'].keys()),
             index=0,
             key='lang_choice',
             horizontal=True
         )
+
         input_text = st.text_area(
-            label='Input',
+            label='輸入',
             placeholder='請輸入文字',
             key='input_text'
         )
-        output_container = st.empty()
-        _ = output_container.text_area(
-            label='Output',
-            placeholder='',
-            disabled=True
-        )
 
-        if st.button('Go'):
+        output_container = st.empty()
+
+        if st.button('翻譯'):
             if not input_text.strip():
                 st.warning("請輸入要翻譯的文字")
                 return
 
             with st.spinner('翻譯中...'):
 
-                source_lang, target_lang, rule = self._lang_directions[direction]
-                result = self._chain.invoke({
+                result = self._chain.stream({
                     'input_text': input_text,
-                    'source_lang': source_lang,
-                    'target_lang': target_lang,
-                    'rule': rule
-                }).content
+                    'source_lang': self._config['app']['lang_directions'][direction]['source_lang'],
+                    'target_lang': self._config['app']['lang_directions'][direction]['target_lang'],
+                    'description': self._config['app']['lang_directions'][direction]['description']
+                })
 
-            output_container.text_area(
-                label='Output',
-                value=result,
-                disabled=True
+            output_container.write_stream(
+                stream=result
             )
 
 
diff --git a/translator/config.yaml b/translator/config.yaml
index dbf5e52..183e566 100644
--- a/translator/config.yaml
+++ b/translator/config.yaml
@@ -5,4 +5,14 @@ app:
   ollama_model_name: gemma3:12b-it-qat
   ollama_max_tokens: 256
   ollama_temperature: 0.2
-  ollama_top_p: 0.9
\ No newline at end of file
+  ollama_top_p: 0.9
+  ollama_keep_alive: 2m
+  lang_directions:
+    '英->中':
+      source_lang: '英文'
+      target_lang: '正體中文'
+      description: '台灣地區用語'
+    '中->英':
+      source_lang: '中文'
+      target_lang: '英文'
+      description: '自然通順'
\ No newline at end of file