This instrument, called a Nilometer was used by the ancient Pharaohs to establish how high the periodic floods would be.
这个被称作"Nilometer"的设备，是古代法老用来预测一定时期内洪水的可能高度。
This instrument, called a Nilometer was used by the ancient Pharaohs to establish how high the periodic floods would be.
这个被称作"Nilometer"的设备，是古代法老用来预测一定时期内洪水的可能高度。
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