pre-breedingCOCA³¹⁵¹¹¹⁺⁴BNC¹⁷³⁹⁹⁵⁺² 基本例句 🌏前育种；前育种研究 One month before breeding, the bitch should have a thorough pre-breeding physical examination by a veterinarian. Her vaccinations should be current, and she should be tested and treated for parasites. 在交配前一周，母犬需要由专业兽医做一个详细的身体检查，要确认其疫苗还在免疫期内，并且要进行寄生虫的检查和治疗。 aigou