每年春天，亚马逊河豚离开所属河道的范围，到从前的栖地去晃一晃。
Every spring the Amazon dolphins get to leave the confines of their river channel for a taste of their former habitat.
每年春天我和我的妻子都会特意到这儿来赏花。
Every spring my wife and I would come here just to see the flowers.
斑头鹤在喜马拉雅山的南面过冬。 每年春天都要冒险飞越巅峰，到高原的湖泊繁衍生息。
Having spent the winter south of the Himalayas, bar-headed geese make the hazardous mountain crossing each spring to breed on the plateau's lakes.
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