Traditional Culture Encyclopedia - Weather forecast - What is the function of the sentences with wavy lines in the Normandy shipwreck on the one hand and on the other?

What is the function of the sentences with wavy lines in the Normandy shipwreck on the one hand and on the other?

Weather, environment. On the one hand, it describes the surrounding weather, on the other hand, it also implies the dangerous situation of the protagonist. Victor hugo, the author of Death in Normandy, was the leader of the literary movement in the19th century and a representative of humanitarianism. He is called "Shakespeare of France".