They're doing chemistry, geology, hydrology, petrology...everything but astronomy!

它研究化、地理、水文、岩石等等，总之都不是天文！

Geologists can study hydrology, faults, disturbance.

地可以研究水文、断层、扰动。

The water levels at the Huayuankou hydrology station rose to 4,020 cubic meters per second at 9 pm Monday, said the MWR.

9 月 27 日 21 时，黄河花园口流量涨至 4,020 立方米每秒。

But there is still much we can learn as we continue to better understand the remarkable hydrology and geology of our red neighbor.

但是，随着继续更好地了的红色邻居非凡的水文和地情况，仍然可以到很多东西。

The Stimson Center’s Richard Cronin said China has no transparency because it does not disclose hydrology data, information Beijing views as a state secret.

史汀生中心的理查德·克罗宁 (Richard Cronin) 表示， 中国不透明， 因为它不公开水文数据， 北京认为这些信息属于国机密。

The water flow at the Tongguan hydrology station in the middle of the river has increased rapidly, reaching 5,020 cubic meters per second at 3:48 pm Monday.

黄河中游潼关流量迅速上涨，至 9 月 27 日 15 时 48 分，潼关流量涨至 5,020 立方米每秒。