十五五，十五问｜如何有效激活14亿人消费潜力

Use “是…的” to stress the identity, nature, or manner of something; it often pairs a topic with a descriptive complement for emphasis.

“在…之际” means “at the moment of” or “on the occasion of” and links an action or event to another significant timing.

Use “通过…实现…” to express that something is achieved by means of a method, tool, or approach.

“从…向…跨越” describes a transition, highlighting movement or progress from one state or phase to another.

“以…为…” introduces the basis, means, goal, or focus of an action, like “taking … as …”.