听新闻，学英语 - 为了培育“可爱”，人们给它“伤害”

English Bulldog health problems prompt cross-breeding call inbred /ɪn'bred/ a. 近亲交配的，同系的 infusion /ɪn'fjuːʒ(ə)n/ n.灌输，注入 mortality /mɔː’tælɪtɪ/ n. 死亡率，必死性 reproductive /ˌriːprə'dʌktɪv/ a. 生殖的 pelvis /'pelvɪs/ n. 骨盆 intercourse /'ɪntəkɔːs/ n. 交配，交流 Crossing the English Bulldog with another breed is the best way to ensure its survival, scientists have argued. Due to centuries of selective breeding for physical traits, the Bulldog has become so inbred it cannot be returned to health without an infusion of new bloodlines, a genetic study suggests. The dogs suffer from a variety of health issues due to centuries of selective breeding. For example the Bulldog's distinctive short face and snout has led to breathing difficulties, which are the leading cause of ill-health and mortality in the breed. Skin allergies and mobility problems are also common - as are reproductive issues. Females tend to have a narrow pelvis, meaning litters often have to be born through C-section. And breathing problems mean the males often have trouble sustaining intercourse.