Biotechnologies for animal nutrition and production are often based on the use of micro-organisms, including those produced through recombinant DNA technology.
2
有能替代动物肉类的其他营养来源。
There are alternative sources of nutrition to animal meat.
《柯林斯英汉双解大词典》
3
寄生虫的一个典例是绦虫,它生活在更大的动物的肠道内,从宿主那里吸收营养。
An example of a parasite is a tapeworm that lives inside the intestines of a larger animal and absorbs nutrients from its host.