咱们先听一个故事:天鹅湖中有一个小岛,岛上住着一位老渔翁和他的妻子。平时,渔翁摇船捕鱼,妻子则在上面养鸡喂鸭,除了买些油盐,他们很少与外界往来。有一年秋天,一群天鹅来到岛上,它们是从遥远的北方飞来,准备去南方过冬的。老夫妇见到这群天外来客,非常高 Let’s start with a story: There is an island in Swan Lake where an old fisherman and his wife live. Usually, fishermen shake the boat fishing, his wife is above the chickens feeding ducks, in addition to buy some oil and salt, they seldom contact with the outside world. One autumn, a swarm of swans came to the island, coming from far north to prepare for the winter in the south. Old couple to see these visitors, very high