to flap one's gums
01
胡说八道, 胡扯
to talk in great length without mentioning anything important or of high value
Dialect
American
习语
非正式
例子
He flapped his gums for an hour without saying anything useful.
他说了一个小时胡话,一点用处都没有。
胡说八道, 胡扯
他说了一个小时胡话,一点用处都没有。