diff --git a/internal/stt/assemblyai/assemblyai.go b/internal/stt/assemblyai/assemblyai.go
index fa70b56..c6e3034 100644
--- a/internal/stt/assemblyai/assemblyai.go
+++ b/internal/stt/assemblyai/assemblyai.go
@@ -42,12 +42,12 @@ func (s *STT) Recognize(audioData []byte, audioURL string) (string, error) {
 func (s *STT) transcribeFromURL(audioURL string) (string, error) {
 	ctx := context.Background()
 
+	// 首次尝试：启用语言检测
 	params := &aai.TranscriptOptionalParams{
 		LanguageDetection:           aai.Bool(true),
 		LanguageConfidenceThreshold: aai.Float64(0.1),
-		// LanguageCode: "en",
-		FormatText: aai.Bool(true),
-		Punctuate:  aai.Bool(true),
+		FormatText:                  aai.Bool(true),
+		Punctuate:                   aai.Bool(true),
 	}
 
 	transcript, err := s.client.Transcripts.TranscribeFromURL(ctx, audioURL, params)