1.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。
2.This is the famous Nilometer by which water levels in the River Nilo were noted.
这就是著名的尼罗河仪。用它测星尼罗河的水位。