derivatives

**Line**:
\- If you change the specific distance vs. -
\- time function, you'll have some different velocity vs. -
\- time function. -

**Time**:
164.84 - 171.80

**Describe the issue**:
Currently this sentence is divided in 3 parts. I think it should be merged in one single part.
Same in 175.68 - 179.82, 331.58 - 337.68

檢查影片 'derivatives' 在時間戳 164.84-171.80、175.68-179.82 和 331.58-337.68 附近的轉錄檔案。按說明將被分割的行合併為單一句子。透過檢查字幕的格式和連貫性來驗證更改。

由索引模型根據 Issue 內容生成。