The result file still contains English content

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Environment

- OS: Docker image: python:3.11-slim
- Python: 3.11
- BabelDOC: 38d3896dcde9b5a940c62cf5563cadea673a64d3

Describe the bug

The content of the PDF file seems to have not been fully extracted, resulting in some content not being translated. See the attachment for the file. LLM: Qwen 3.8-27B. This is a good project, and if you need anything else, I am happy to provide it. [Input] book-riscv-rev3.pdf

[Output] example.zh.dual.pdf

Steps to Reproduce

[Input] book-riscv-rev3.pdf

[Output] example.zh.dual.pdf

Expected Behavior

Expected document with more comprehensive Chinese content

Relevant Log Output or Screenshots

Original PDF File

[Input] book-riscv-rev3.pdf

[Output] example.zh.dual.pdf

Additional Context

No response