Dentograph
牙图解
🗣️ 情景例句
Not a bad idea, Robbie.
蛮好的主意， Robbie。
Crazy!
神经病！
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。