margin of employment

例句：

1. 1. The company's profitability is closely tied to its ability to attract and retain employees.
   该公司的盈利能力与其能否吸引和留住员工密切相关。
2. 2.The marginal cost of production is the additional cost incurred when an additional unit of output is produced.
   生产边际成本是当额外生产一个单位产出时增加的成本。
3. 3. The marginal utility of a good is the additional satisfaction or utility that a person gains from consuming anadditional unit of the good.
   某商品边际效用是指一个人从额外消费一单位该商品中获得的额外满足或效用。