动物产品是生产效率不高的，并且会导致可用的热量和蛋白质的净亏损。

Animal products are inefficient to produce and result in a net loss of available calories and protein.

youdao

动物产品是生产效率不高的，并且会导致可用的热量和蛋白质的净亏损。

Animal products are inefficient to produce and result in a net loss of available calories and protein.

youdao