Shape
. lip: natural
. vocal cord: vibrate( vai'breit ) 把气推出来
. tongue: lit up the middle of tongue
description
. 有点像打嗝
Example
. raise up: reise vp
. lip: natural
. vocal cord: vibrate( vai'breit ) 把气推出来
. tongue: lit up the middle of tongue
. 有点像打嗝
. raise up: reise vp