鸟儿清洁着它们的羽毛并唱着晨歌。
Birds were cleaning their feathers and singing morning songs.
▼点击显示答案
feathers英 /ˈfeðəz/|美 /ˈfɛðərz/
解释
feathers 是名词 feather 的复数形式，feather 指鸟类身上覆盖的"羽毛"，由角质蛋白构成，具有保暖、飞行和保护皮肤的功能。
Birds were cleaning their feathers and singing morning songs.
feathers 是名词 feather 的复数形式，feather 指鸟类身上覆盖的"羽毛"，由角质蛋白构成，具有保暖、飞行和保护皮肤的功能。