口部肌肉治疗改善适当口肌技巧，语音获得，喂食技巧和口腔管理所需的基础技巧。

Oral-motor therapies improve the foundational skills necessary to achieve appropriate oral-motor skills, speech sound acquisition, feeding skills, and oral management.

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为了规范元音的发音，言语学家创造了语音图，即语音口腔剖面图，使瞧不见、摸不着的差别元音有了明确的发音定位。

In order to standardize pronunciation of vowels, phoneticians invented a diagram illustrating the side view of oral cavity and showing clearly the pronouncing positions of different vowels.

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