AID or artificial insemination by a donor他精人工授精In animal breeding, especially cattle - breeding, artificial insemination is now widely used.在动物生育, 特别是牛的生育中, 人工授精已经广泛使用.These cases particularly recommend themselves to tre...
The barn was filled with the sour-sweet smell of fresh dung.谷仓里弥漫着新粪酸甜的气味。Her voice was as soft and sweet as a young girl's.她的声音如少女般柔美悦耳。Our spirits rallied as the bitter-sweet alcohol worked its magic.苦中带甜的酒发挥了奇效，我...
Sheep are particularly well suited for domestication.绵羊特别适合驯养。The domestication open up of plant, animal the times that agriculture develops.植物 、 动物的驯化开辟了农业发展的时代.The domestication, breeding, and improvement of animals; t...