pedigrees的例句（pedigrees在句子中的用法）

• These trees have pedigrees stretching back thousands of years. 这些树的系谱可以追溯到数千年前。
• Party activists with lower middle class pedigrees are numerous. 党的激进分子中有很多出身于中产阶级下层。
• 60 per cent of dogs and ten per cent of cats have pedigrees. 60%的狗和10%的猫有血统记录。