J Betteridge.Reflections on the golden anniversary of the first embryo transfer to produce a calf[J].Theriogenology,2000,53(1):3-10.是什么意思_J Betteridge.Reflections on the golden anniversary of the first embryo transfer to produce a calf[J].Theriogenology,2000,53(1):3-10.在线翻译_英语_读音_用法_例句