Fishing: It emphasizes wasting time at work or study time, and fails to complete the tasks or study contents that should be completed. For example, "the teacher talked for hours today, and I have been fishing, and I didn't understand at all."
Lazy work: refers to deliberately delaying time and working slowly in order to kill time and avoid work. For example, "this project should have been completed within one week, but they delayed handing it in for two weeks."
Paddling: refers to perfunctory work or study, not taking it seriously, inefficient, delaying time and wasting resources. For example, "he paddles all day, drags his feet and is not serious and responsible, and the company will not keep him."
Spoiler: it mainly describes the behavior of a team or athlete in sports competition, such as poor performance, not playing seriously and deliberately losing. For example, "they obviously didn't play well in this game, and we have no chance of winning."