Embryos were collected on Day 7 post oestrus and two breeds ewes produced a much higher proportion of morula, they were 66.24% in Borderdale and 75.78% in Poll Dorset.是什么意思_Embryos were collected on Day 7 post oestrus and two breeds ewes produced a much higher proportion of morula, they were 66.24% in Borderdale and 75.78% in Poll Dorset.在线翻译_英语_读音_用法_例句