Shrunk, tamed, crossbred and eaten, are bison now a domesticated species?

缩小、驯养、杂交、被食用，现在的野牛能算是驯化物种了吗？

For it is only by continually improving the yield of domesticated species that all those extra mouths can be fed.

因为只有不断提高驯化物种的产量，才能喂饱所有那些额外的嘴。