We watched the cow suckling her calves.我们看了奶牛如何给小牛喂奶。Chymosin used traditionally in cheese making is an aspartic protease extracted form abomasum of suckling calves.传统干酪加工中使用的凝乳酶是从犊牛皱胃中提取出的一种天冬氨酸蛋白酶.The calves were reall...
a cow suckling her calves给小牛吃奶的母牛The ancient Greeks sacrificed lambs or calves before engaging in battle.古希腊人在打仗前用羊和小牛作祭品.The colts and calves are gambolling round the stockman.小马驹和小牛犊围着饲养员欢蹦乱跳....