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

通常情况，非重读元音或双元音嘴唇更放松，并且没有完口型。

Is it wasabi in here? - (with full mouth) I like it!

这里有芥末吗？- （满嘴）我喜！

Phil and his daughter kept my mouth full all afternoon.

和他女儿午都让我满嘴都是。

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清单里面，还有我其他模仿课程，来进行完每日口语训练，好吗？

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。”一面去摸那衣袋里铜币。