ph.

1. I'm not surprised those two are such friends; they're birds of a feather.
那两个人交情这么好我不惊讶，他们是一丘之貉嘛。

1. 一丘之貉：Birds of a feather flock together 物以类聚 | birds of a feather 一丘之貉 | birdseed 鸟饵

2. 物以类聚,人以群分(一丘之貉)：A good conscience is a soft pillow. 白天不做亏心事;半夜不怕鬼敲门; | birds of a feather 物以类聚,人以群分(一丘之貉 | You can't judge a tree by its bark.人不可貌相,海水不可斗量;

3. 物以类聚：490. Without rhyme or reason.无缘无故. | 491. birds of a feather.物以类聚 | 492. Those who know more act as teachers.能者为师.

4. 一根羽毛的鸟：12 鹅妈妈之歌 MOTHER GOOSE MELODIES | 13 一根羽毛的鸟 BIRDS OF A FEATHER | 14 忙忙活活的海狸们 THE BUSY BEAVERS

5. birds of a feather：bof; “同群之鸟”，专业会议，因特网的非正式讨论组