milch cow

基本解释

They are becoming the milch cow of the family.
他們將成爲家庭的財源。
Milch cow industry is one of important part of dairy industry, including breeding milch cow , raising milch cow , preventing and cure of the epidemic disease and milk production.
嬭牛業是嬭業系統的一個重要組成部分，主要包括嬭牛培育、嬭牛飼養、疫病防治和原嬭生産四個環節。
Meanwhile using artificial soil technology we can renew and improve the quality of our existing grassland and will build new and high quality rangeland and popularize good milch cow.
應用人造土壤技術，在恢複與提高已有草場質量的同時，還要新建一批高質量的牧場，我們再推廣良種嬭牛。

It is also dawning belatedly on the Treasury that the days of treating transport as a convenient milch cow are coming to an end.
ECONOMIST: Transport