1. A large bird(Corvus corax) having black plumage and a croaking cry. 乌鸦一种的大鸟，（渡鸦）羽毛黑色，叫声嘶哑。
2. Explanation: Two galaxies are squaring off in Corvus and here are the latest pictures. 说明： 两个星系在乌鸦座内缠绕在一起，这张就是最新的照片。
3. of Black perching Birds (see passerine) of the genus Corvus (family Corvidae) that are smaller than most ravens and have a thinner Bill. 雀形目鸦科鸦属二十多种黑色鸣禽的俗称，比大多数渡鸦小，嘴也不那么厚实。
4. Any of more than 20 species of Black perching Birds (see passerine) of the genus Corvus (family Corvidae) that are smaller than most ravens and have a thinner Bill. 雀形目鸦科鸦属二十多种黑色鸣禽的俗称，比大多数渡鸦小，嘴也不那么厚实。
5. of Black perching Birds (see passerine) of the genus Corvus (family Corvidae) that are smaller than most ravens and have a thinner Bill. 雀形目鸦科鸦属二十多种黑色鸣禽的俗称，比大多数渡鸦小，嘴也不那么厚实。
