| 释义 |
1 ?黑天鹅 ... 鸭科 Anatidae 天鹅属 Cygnus 黑天鹅 C. atratus ...
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C. atratus stretches its legs out, raises them, and then lowers its "gaster," the posterior body segment: the butt. atratus伸展它们的腿提高，然后降低其“柄后腹,”身体后段,即尾部。 - 2
C. atratus stretches its legs out, raises them, and then lowers its "gaster, " the posterior body segment: the butt. atratus伸展它们的腿提高，然后降低其“柄后腹，”身体后段，即尾部。 - 3
The Cephalotes atratus species of tree-nesting ant can perform directed aerial descent, according to a recent article in Integrative and Comparative Biology. 根据最近的一篇综合和比较生物学的文章发现，Cephalotes atratus种类的蚂蚁筑巢时能表演空中直线下降。
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