Herdy海尔迪herdn.兽群；牧人；群vt.放牧；群集；使 ... 成群，把…赶到一起vi.聚在一起herd into the corner聚集到角落里herd to dwarf herbage矮草放牧herd sheep and cattle放牧牛羊Herdan rs characteristic赫丹特征数herdsmen differentiation牧民分化Herd Improvement Registry乳牛改良注册制herds of cattle and sheep成群的牛羊herders income increasing牧民增收Herd health program Yes No实行牛群保健计划Herder's attribution theory