shí​qì​shí​dài

Stone Age

石器时代 石器時代 shí​qì​shí​dài
Stone Age noun
The earliest period of human history, characterized by the use of stone tools; it is generally divided into the 旧石器时代 jiù​shí​qì​shí​dài, 中石器时代 zhōng​shí​qì​shí​dài, and 新石器时代 xīn​shí​qì​shí​dài.

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