wag the feather

例句：

1. 1. The bird was waggingits feathers in excitement.
   那只鸟激动地挥动着羽毛。
2. 2. The kite was waggingits feathers as it soared high into the sky.
   风筝在高空中挥动着羽毛翱翔。
3. 3.The baby bird was wagging itstiny feathers and chirping happily.
   小鸟儿挥动着它那小小的羽毛，开心地啼叫。