In the rational examination on the deterrent effect of death penalty, the focus is whether or not death penalty has marginal deterrent effect in comparison with life imprisonment.
在对死刑的威慑效果进行理性考察的过程中，死刑是否具有大于终身监禁的边际遏制效果是考察的中心所在。
2
For analytical purposes, it is more important to focus on the marginal revenue and marginal cost curves.
从分析的目的上来说，关注边际收益和边际成本曲线会更重要些。
3
Being intangible product with zero marginal cost, software's quality management is more difficult than physical product, and should place more focus on the process quality and process quality control.