wool

noun [专属名词]羊毛，动物毛；毛线，绒线；毛料，毛织物；金属（或矿）丝

A new invention means sheep do not have to be sheared – the wool just falls off. ^{一项新的发明意味着羊不必被剪毛–羊毛就会脱落下来。}