What do you mean by closing the river?

Closing the river means: in winter, the river freezes and ships cannot pass.

Word segmentation explanation:

Seal:

(a), closed, isolated from the outside world: closed, closed, sealed, sealed, sealed, sealed, covered, sealed, sealed, capped, frozen snow floating, closing hillsides to facilitate afforestation.

(2) A paper cover used to hold letters, money, etc. : envelopes and prizes.

(3) The emperor gave land or titles to relatives or courtiers: marquis, monarch (nobles with fiefs), city, sacrifice (official titles), ceremony and feudalism.

(4) Borders: frontiers, territories and borders.

(5), restrictions: so rest on its laurels.

(6) The emperor built an altar to worship heaven: collecting Zen (the worship of heaven is "collecting" and the sacrifice of land is "Zen").

(7), quantifier, something used to hold an envelope: a letter.

(8) surname.

Rivers:

(1) The general name of waterway: river course, river ditch, valley, river, floodplain, riverside, fresh river (fresh fish and shrimp for food), etc. ), river ports, river bends, river networks, river transport, inland rivers.

(2) Especially the Yellow River in China: Hetao and river defense.

(3) refers to the "Milky Way": Tianhe and Hehan.

Example of river closure:

1. Due to the warm winter, the closure of the Yellow River was delayed by one month compared with previous years.

2. On the basis of analyzing the factors that affect the formation of ice flood, a method of ice flood forecasting based on fuzzy optimization neural network model is proposed, and it is applied to the forecasting of the closure and opening dates of the Yellow River in Inner Mongolia.

3. Light snow seals the land and heavy snow seals the river. When the light snow comes, I will make you the master of the happy kingdom and give you a thousand miles of fertile land. Please work hard and never slack off. Pay the happiness tax every day and rent a load. There must be no mistakes. Happy Xiao Xue!

However, a new cold air will strike again tonight, and the whole area will cool down against the strong wind. After the cold air, the Bameng section of the Yellow River will be completely closed.

5. "Why not? Dragging debts, detaining grain boats and intercepting rivers all won.

6. According to the formation and development mechanism of ice jam, the annual water level, closure date and opening date of the spring river from Dingjiagou to Baijiachuan in the lower reaches of Wuding River Basin are simulated by hydraulic model and thermodynamic model.

7. Therefore, Haibowan Reservoir will no longer undertake the task of ice prevention after the successful closure of the Inner Mongolia River.

8. Light snow seals the land and heavy snow seals the river. In the snowy solar term, I named you the Lord of the happy kingdom and gave you thousands of miles of fertile land. Please work hard and never slack off. Pay the happiness tax every day and rent a load. There must be no mistakes. Happy snow!

9. After the closure period, the water level of Haibowan Reservoir can generally reach the normal water level, and the discharge of Inner Mongolia reaches is relatively stable during the stable closure period.

10, monsters appeared in the Han River, and the army closed the river, which created a great transformation of eccentric families and became strange heroes.