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

通常情况，读元音或双元音嘴唇更放松，并且没有完整口型。

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

这里有芥末吗？- （满嘴）我喜欢！

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，还有我其模仿课程，来进行完整每日口语训练，好吗？

Phil and his daughter kept my mouth full all afternoon.

菲尔女儿整个午都让我满嘴都是。

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：“买些什么给吧。”一面去摸那衣袋里铜币。