Pedagogy has been tending to become 'educational science' both in theory and in practice since the beginning of 19th century. 'Pedagogy' that has concrete contents tends to disappear gradually.

自19世纪初起，教育学无论在理论上还是在实践中都日益趋向科学，成为“教育科学”，而具有实质内容的“教育学”逐渐消失。

youdao

In the dream, you gradually go away, want to catch you, but how can not hold, until you slowly disappear.

在梦里，你渐渐远去，想抓住你，却怎么也抓不住，直到你慢慢消失。

youdao

Loopholes, refers to the life cycle from objective existence to be loopholes, to discover, using the mass hazards and gradually disappear cycle time.

漏洞生命周期，是指漏洞从客观存在到被发现、利用，到大规模危害和逐渐消失的周期。

youdao

They just want to do it gradually, and they want to see undocumented workers disappear altogether.

FORBES: Labor Won't Embrace Immigrants

Enron, on the other hand, may disappear forever as its collection of energy assets and trading contracts are gradually cleaned up and sold to others.

ECONOMIST: America's business recovery