Classmates say Cho almost never opened his mouth because of speech difficulties.

他的同学称由于语言障碍，他很少与他人交流。

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The quantitative assessment of articulating function is an essential part of intervening speech difficulties in children by language education.

构音功能的定量评估是对患有构音障碍的特殊儿童进行语言教育的前提条件。

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Autistic spectrum disorders often result in major difficulties in comprehending verbal information and speech processing.

自闭症常常导致人们在理解言语信息和言语处理方面存在重大困难。

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That means that kids with learning problems such as dyslexia, speech difficulties or autism are entitled to have their public school systems pay for special services.

FORBES: A Costly Education

She told Sarah Montague that hidden speech difficulties were sometimes to blame, but other times children were not getting "wide, rich dialogue" from their families, partly because parents "don't know how" to talk to their young ones.

BBC: Children 'who don't know their own name'

There was a hint in the president's speech of the difficulties that lie ahead.

ECONOMIST: Venezuela