Along with the research of high speed train, problems occur in its control field, some are popular issues, some directional.

随着高速列车课题研究的开展，高速列车控制中也遇到一些带有方向性和普遍性的问题。

youdao

Emotional exhaustion is one of the most popular issues in the current fields of organizational behavior and management psychology.

情绪衰竭是组织心理学和管理心理学的热点研究领域之一。

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His poll ratings sinking under the weight of Iraq, Mr Bush is grasping for popular issues to keep him afloat; and global warming has evidently become such an issue.

受伊战所累，布什的民意支持率一路下滑，他也希望抓住民众关心的问题来提升自己的支持率，而全球气候变暖显然就成了这样一个问题。

youdao

Certainly,I would do so." Palin is popular among grassroots conservatives around the country,especially those with conservative views on social issues,such as abortion.

VOA: standard.2010.02.09

Making a prediction based only on text may at first glance seem myopic because it ignores most of the formidably complex interplay of candidate personality, voter sentiment, and popular issues that ultimately determines the outcome of an election.

FORBES: How Mathematical Modeling Of Speech Text Can Predict Presidential Election Outcomes

The GOP does not have to take the popular position on every issues, but it cannot be seen as taking radical positions on all ten that are contrary to what so many non hard-core Republican voters believe.

FORBES: Republicans Face A Communication problem with American Voters

And then there's this: apparently the New Orleans Police Department has, in the popular lingo, some serious issues.

NPR: Who Wants To Be New Orleans Mayor, Anyway?