Noun:

1. (ornithology) the class of birds

Aveabbr.大街；途径；林荫大道(=avenue)Aveinten.阿文特(在西班牙；西经 4º50' 北纬 40º45')avenius无脉的Avecosa阿韦科萨Aventin阿文京Avenale阿韦纳莱avellan四臂榛果形的Avenati阿韦纳蒂avenine燕麦碱Avenier阿弗尼耶Avestan阿维斯陀语

1. Aves diversity is one of the most important components of the biodiversity.
   鸟类多样性是生物多样性的重要组成部分。
2. Peacocks are classified in the phylum Chordata, subphylum Vertebrata, class Aves, order Galliformes, family Phasianidae.
   孔雀被认为是脊索动物类，脊索动物亚门，鸟类。