The fifth part expose the existence problem and try to explain the reasons.

第五部分是阐述当前我国粮食补贴政策存在的问题及其产生原因。

youdao

As application, we study the existence problem of nearest point for this kind of mappings.

并研究了该类映象不动点的存在性问题，给出其对最近点问题的应用。

youdao

The existence problem for a class of nonlinear retarded functional differential equation is researched.

研究了一类非线性滞后型泛函微分方程周期解的存在性问题。

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

As part of that lawsuit and a subsequent investigation by Burton's committee, Haas claimed he had been threatened with jail if he revealed the existence of the problem.

CNN: Justice Department opens criminal investigation

This one example does not prove the existence of a systematic problem.

ECONOMIST: Forensic science

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)