Generally, the unstressed version of a vowel or diphthong is more relaxed and doesn't take the full mouth position.

常情况下，非重读的元或双元嘴唇更放松，并且没有完整的口型。

As much as you can so save it to a playlist along with some of my imitation lessons for your full mouth daily workout okay?

你们可以把它收藏到播放单里面，还有我的其他的模仿课程，来进行完整的每日口语训练，好吗？

Phil and his daughter kept my mouth full all afternoon.

菲尔和他的女儿整个下午让我满嘴。

On the street Garrone halted, and said, with his mouth full of bread: " What shall I buy" ? and he rattled a couple of soldi in his pocket.

卡隆在街上忽然站住，嘴里满满嚼着面包说：“买些什么给他吧。”一面去摸那衣袋里的铜币。