是闭合的。只有闭合的时候才能唱到这个高度，气声上不去

来源: jzhou8968 于 2020-05-01 07:51:44 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.