Human beings have acquired the ability to express and explain through "signs" for a long time. But since there was no system formed in the early time, the signs only had some simple meanings.
早在古代，人类就懂得使用“标识”来表达说明，只是早期的标识没有现在的系统而已，仅仅表达一个简单的意思。
Verbal signs bridge human subjective consciousness and the objective world. Human beings get to know the world through verbal signs.
语言符号是联系人主观意识和客观世界的桥梁，人借助语言符号去认识世界，了解世界。
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