All passengers should be eliminated from dairy herds. 所有不產(chǎn)奶的牛應從奶牛中清除出來(lái)。
But now that I own a dairy herd and am breeding pedigree Guernsey stock, I need that book and I cannot find it. 但現在我經(jīng)營(yíng)著(zhù)一群奶牛,飼養的是純種根西奶牛,我需要那本書(shū),它卻無(wú)處可尋了。