Some large birds, like honking big geese and 30-pound swans, get around the problem by forgoing flight while they get all their molting over with in one fell swoop.
一些大型鸟类，像是大雁或是体重能够达到30磅的天鹅，是以放弃飞行能力来解决换羽的难题的。
It was moving its big webbed feet slowly. And the swans stood in the air watching.
黑额黑雁慢慢地移动着大大地蹼脚，空中盘旋的天鹅望着它的每一个举动。
Two big white swans were flying above the river towards Lough Gill, head long stretched.
两只硕大的白色天鹅，伸长着脖子沿河飞翔，朝着吉尔湖的方向。
Two big white swans were flying above the river towards Lough Gill, head long stretched.
两只硕大的白色天鹅，伸长着脖子沿河飞翔，朝着吉尔湖的方向。
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