Measures against encephalitis could reduce the incidence of speech impairment degree 1.

清洁环境、阻断脑炎传播有利于减少脑炎所致的一级言语残疾；

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Nevertheless it may underlie the very limited ability of people with aphasia to compensate for the speech impairment by using informative gestures.

然而，失用可以影响失语症患者利用动作代偿言语障碍。

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Autism lies on the more severe end of the spectrum whereas Asperger's is a milder condition that doesn't involve speech impairment (as classic autism does);

自闭症位于谱系较为严重的一端；阿斯伯格综合症不包括语言障碍（而典型自闭症包括），是较为缓和的谱系障碍；

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That could mean a new way for about 70 million people with hearing and speech impairment to verbally communicate and connect to people around them.

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Today, she shows no evidence of a speech impairment.

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