| 单词 | Mergus merganser americanus |
| 释义 | Mergus merganser americanus (extremely rare) n WORD FAMILY Mergus merganser americanus n common North American diving duck considered a variety of the European goosander Syn|Hyper American merganser fish duck, merganser, sawbill, sheldrake large crested fish-eating diving duck having a slender hooked bill with serrated edges |
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