The etiology of developmental apraxia of speech involves motor planning problems and it is associated with the level of language development of children.
发育性语音失用症的病因涉及语音的运动计划问题，并与儿童语言发育水平有关。
Though "easy" may be welcome, unluckily it's of little use for any long time development of reading skills and the general language level.
虽然“简单”可能是受欢迎的，但不幸的是，它对长期发展阅读技能和一般语言水平几乎没有用处。
SVG, in contrast, ACTS as a higher-level language for development of a wide range of graphical effects.
相反，SVG充当一种更高级别的语言，用于开发广泛的图像效果。
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