1. First open PR on the computer, right-click the audio track, and then click Speed/Duration, as shown in the figure below.

2. Secondly, after clicking the speed/duration, check to keep the audio pitch, as shown in the figure below.

3. Then, after keeping the audio tone selected, press the speed expansion shortcut key X, as shown in the figure below.

4. Finally, after the shortcut key X is scaled by speed, you can directly stretch the audio track, as shown in the figure below.