Joke Collection Website - Bulletin headlines - What is a hydrological boom?

What is a hydrological boom?

is a kind of boat.

The pontoon of Qianjiang Hydrological Wharf has been used for nearly 33 years, and the hull is seriously corroded, and the equipment and lines are aging, which has reached the retirement age. In order to ensure the safety of water operation, the Hydrological Mid-stream Bureau decided to replace Yueyang Branch before using the "Yangtze River Hydrological Yueyang Dun" for five years to be transferred to Zekouwen Wharf in Qianjiang for epidemic treatment.