Reciprocative
a. reciprocate（互给；互换）的变形
🗣️ 情景例句
Hello.
哈喽 。
How nice. Where were you exactly?
太好了，那你究竟去哪儿啦？
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。