So to say, precedent, what you're going to do is you're going to start with that p r per per and to do this, get your lips ready for that are sound and your tongue is either going to be pointed down or flipped back for that.
所以說,先例,你要做的是你要從那個p r per per開始,要做到這一點,讓你的嘴脣準備好那個是聲音,你的舌頭要麼是指向下方,要麼是向後翻轉的那個。