Showing children pictures sometimes helps them to vocalize their ideas.

让儿童看图画有时有助于他们用言语表达思想。

《牛津高阶英汉双解词典》

He tried to vocalize his feelings.

他力图说出他的感受.

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Babies can't vocalize their emotions, but you can judge from their facial expression and behaviors.

婴儿无法说出自己的感情, 但是你可以从他们的面部表情和行为判断出他们的意思.

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Please allow me to vocalize as desired during labor and birth without comment or criticism.

在待产和生产的过程中允我发声,请不要给我任何建议或者是批评.

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