Kill two birds with one stone. 一箭双雕；一举两得；
A bird in the hand is worth two in the bush. 双鸟在林不如一鸟在手；
Birds of a feather flock together.物以类聚，人以群分。
Birds of feather.一丘之貉；
black sheep.害群之马，无用之辈；
buy a pig in a poke.买下没仔细看的东西，隔山买牛；
can not say boo to a goosd.胆小如鼠。
林业动态信息
