2. Since it is difficult to quantify such constraints
explicitly, the budget limit may be used as a proxy.
由于明确量化这样的约束是困难的,预算限额就被用作一种代理(限制措施)。
3. The idea that government policy should be focused more
explicitly on promoting happiness has been gaining support.
有关政府政策应更明确地聚焦于增进幸福的主张,近来正获得支持。