Voice tool is a supporting tool usually provided by CSCW system.
语音工具是CSCW应用系统常提供的一个支撑工具。
Voice is the physiological function, and also an essential job tool to teacher.
嗓音对于教师来说，既是生理功能，又是至关重要的职业工具。
Voice is the physiological function, and also an essential job tool to teacher.
嗓音对于教师来说，既是生理功能，又是至关重要的职业工具。
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