在没有拖拉机的年代，大部分家庭将骡子作为役畜来耕地谋生，这是当时很重要的产业。
This was an important business before the days of tractors, when many families made a living from farming and mules were used as work animals.
在拖拉机出现之前，这是一项重要的业务。当时，许多家庭以务农为生，骡子被用作役畜。
This was an important business before the days of tractors when many families made a living from farming, and mules were used as work animals.
水牛也是一种役畜。
印加人将美洲驼当作役畜驱使，但他们没有可供骑乘的动物。
The Inca used llamas as beasts of burden but had no animals to ride.
经营规模较小的贫困农户则缺乏大农具及役畜，常几户合资购买、共同使用。
The poor peasants with small farms were often short of massive dead stocks and livestock because of the shortage of money, and they usually had to buy and use stocks in joint venture.
种植谷物的农民舍弃了役畜，取而代之的是联合收割机和播种机，它们需要的是不一样的家——通常是宽敞的金属棚。
Grain farmers replaced working animals with combines and planters, which demanded different homes, usually wide metal sheds.
种植谷物的农民舍弃了役畜，取而代之的是联合收割机和播种机，它们需要的是不一样的家——通常是宽敞的金属棚。
Grain farmers replaced working animals with combines and planters, which demanded different homes, usually wide metal sheds.
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