noun 下载 🔗分享 鸟类, 禽鸟 The birds, or all the kinds of birds, inhabiting a region. Examples : "The local avifauna includes robins, sparrows, and cardinals. " 当地的鸟类包括知更鸟、麻雀和红雀。 bird animal nature biology environment ecology 与AI对话词汇游戏阅读练习