因為voicetube 的功能非常廣泛，不只有影片可以訓練聽、讀，最近

因為voicetube 的功能非常廣泛，不只有影片可以訓練聽、讀，最近也推出了口說挑戰，只要上傳錄音檔，就有老師會為你評分。

結果 (英文) 1:

Because Voicetube has a wide range of functions, not only videos can be used to train listening and reading, but it has also recently launched a speaking challenge. Just upload the recording file and a teacher will grade it for you.

結果 (英文) 2:

Because voicetube has a wide range of functions, not only videos can be used for training listening and reading, but recently it has also launched the oral challenge. As long as you upload a recording file, a teacher will rate you.

結果 (英文) 3:

Because voicetube has a wide range of functions, not only movies can be used to train listening and reading, but also oral challenges have been launched recently. As long as you upload audio files, teachers will grade you.