But webbed feet no doubt were as useful to the progenitor of the upland goose and of the frigate-bird, as they now are to the most aquatic of living birds.
但蹼足无疑对陆雁和军舰鸟的祖先有用， 就像它们对现存的大多数水生鸟类一样有用。
Upland goose
原声例句
物种起源
英语百科
Upland goose
The upland goose or Magellan Goose (Chloephaga picta) is a sheldgoose of the shelduck-sheldgoose subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans. This bird is indigenous to the southern part of South America.
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