o.to.cystn.（名词）The structure formed by invagination of the embryonic ectodermal tissue that develops into the inner ear.听泡，听囊：由于发育入内耳的未成熟胚层组织套叠所形成的结构See statocyst 参见 statocyst【引伸】o.tocys.ticadj.（形容词）
