Thanks to tractors, combineharvesters, crop-picking machines and other forms of mechanisation, agriculture now accounts for little more than 2% of the working population.
多亏了拖拉机、联合收割机、玉米收割机和其他的农用机械的出现，农业劳动力现在只占了总劳动力不到2%。
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The second source of his optimism is the global boom in agriculture, which is leading to record demand for Deere's products, including combineharvesters, balers and seeders, as well as tractors.
There are no obvious barriers to the mass production of electric tractors and combineharvesters: the weight of the batteries and an electric vehicle's low-end torque are both advantages for tractors.