Calvin and Martin have observed how rising employment costs led to the adoption of labour-saving farm technology in the past, citing the raisin industry as an example.
加尔文和马丁以葡萄干行业为例，观察了过去不断上升的就业成本是如何促使人们采用节省劳动力的农业技术的。
That glut has contributed to stagnant wages for most workers, and low pay has in turn reduced the incentive to firms to deploy labour-saving technology.
这种供过于求的状态使大多数工人的工资难以增长，低的支付成本进而降低了企业使用劳动节约型技术的动力。
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