Have you forgotten the would-be runaway marriage?

你忘记了即将离家出走的婚姻吗？

The provision is inserted, as you doubtless are aware, to hinder runaway marriages as much as possible, and secret unions, and other such objectionable practices.

插入条款，你一定知道， 尽可能地阻止离家出走的婚姻、秘密结合和其他类似的令人反感的行为。