[der] 。
。
puberty vocal change, change of voice
[der] 声变。春期变声。
puberty vocal change, change of voice
[der] 。
。
puberty vocal change, change of voice
[der] 。
春
。
puberty vocal change, change of voice
[der] 声变。春期变声。
puberty vocal change, change of voice
[der] 声变。春期变声。
puberty vocal change, change of voice
[der] 。
春
。
puberty vocal change, change of voice
[der] 声变。春期变声。
puberty vocal change, change of voice
[der] 声变。春期变声。
puberty vocal change, change of voice