translation.en: The first one is the Engels coefficient, which explains that the cost of daily necessities has dropped its percentage all through the past decade, in terms of family income, to about 37-some percent.
translation.zh: 第一个是恩格尔系数 它揭示了日常必需品的消费 下降的百分比 在最近十年中 家庭收入方面 下降到37%