Almost at Fifty Percent 歌词
| 歌曲 | Almost at Fifty Percent |
| 歌手 | Aperture Science Psychoacoustic Laboratories |
| 专辑 | Portal 2: Songs to Test By (Collectors Edition) |
YouTube搜索结果 (转至YouTube)
| 歌曲 | Almost at Fifty Percent |
| 歌手 | Aperture Science Psychoacoustic Laboratories |
| 专辑 | Portal 2: Songs to Test By (Collectors Edition) |