Main structure is from RKT model on give improve, convenient solve an user maintaining on the problem of existence.

重要构架是从RKT 型上予以改善，便捷处理使用者在修养上存有的难题。

youdao

DW : I understand you wrote a report recently about the problem of existence of Chinese literature in the 21st century.

我了解到你最近写了一份关于21世纪中国文学存在的问题的报告。

youdao

So the problem of existence through time,or persistence through time, shouldn't be called the problem of personal identity,but just the problem of identity.

所以积年累月下来存在的问题，就不该叫做个人认同感的问题，而仅是认同感的问题。

youdao

So the problem of existence through time,or persistence through time, shouldn't be called the problem of personal identity,but just the problem of identity.

所以积年累月下来存在的问题，就不该叫做个人认同感的问题，而仅是认同感的问题。

耶鲁公开课 - 死亡课程节选

No doubt this is true, but the report would have benefited from a mention of the opposite problem in the U.S.: the existence of so-called Davis-Bacon requirements for most public works, which set the prevailing union wage scale no matter what the competitive market pay for quality work would be.

FORBES: Infrastructure Consolation in a McKinsey Chart (or 2)

South African youth also find itself burdened with the problem of racial co-existence.

BBC: Young turn their back on politics

The perceived problem is that for the first 600m years of its existence, the planet was being bombarded by bits of debris left over from the formation of the solar system.

ECONOMIST: The origin of life