By the late 18th century, scholars began to wonder how language came into being.
十八世纪后期，学者们开始探讨语言是如何产生的。
The modern competitive gymnastics originated in Germany in the late 18th century.
现代竞技体操于18世纪起源于德国。
The modern competitive gymnastics originated in Germany in the late 18th century.
现代竞技体操于18世纪起源于德国。
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