The Bow-wow theory sees primitive language as an imitation of natural sounds, such as the cries of animals, like quack, cuckoo.

该吠声理论认为，原始的语言，模仿自然的声音，如动物的呼声一样，庸医，杜鹃。

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The bow-wow theory: In primitive times people imitated the sounds of the animal calls in the wild environment they lived and speech developed from that.

“汪汪”理论：原始时代，人们在野外模仿动物发出的叫声，语言便产生了。

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