春天来到了北方，在一片宁静的湖面上，小疣鼻天鹅出生了。疣鼻天鹅爸爸妈妈精心养育着孩子们，期待着它们长大，全家一起飞到南方过冬。
Spring has arrived in the north. On a quiet lake, a group of baby mute swans is born. The mute swan parents are carefully raising their children so that the whole family can fly south for the winter.
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