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。
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.
计算机是一种典型的节省劳动力的机器。
您的邮件自动处理是改进交付，并节省劳动力的关键。
Automating your mail processing is the key to improved delivery and labor savings.
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