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

它们研究化学、地理、水文、岩石等等，总之都不是天文学！

Geologists can study hydrology, faults, disturbance.

地质学家可以研究水文学、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，黄河花园口站流量涨至 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，随着我们继续更好地了解我们的红色邻居非凡的水文和地质情况，我们仍然可以学到很多东西。

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家机密。

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.

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