分析介绍了我国洋葱收获机械的现状，并提出存在问题及相关对策。

And analyzed the status of harvesting machines in China, and proposed some existential problems and countermeasures.

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通过对凌庄水厂现场调研，提出存在问题，确定水厂工艺升级改造势在必行。

Through on-site survey, it is found that there are problems in Lingzhuang Water Plant. It is imperative to upgrade and reform the process of Lingzhuang Water Plant.

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因此，尽管具有体育优势，左撇子的存在给生物学家提出了一个问题。

Sporting advantage notwithstanding, therefore, the existence of left-handedness poses a problem for biologists.

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So again, when the question is posed, ?" "Is there a kind of life that I or you would want to live forever?"

所以当问题提出时，“是否存在我或你们想永远过的生活“

耶鲁公开课 - 死亡课程节选

On Sunspace were discussion groups for each one of the lectures and asked students to pose their prepared questions they went directly to the discussion space about that particular lecture.

在该空间中每个讲座,都存在相应的谈论组,学生要提出准备的问题,然后直接针对特定讲座,展开讨论。

麻省理工公开课 - 媒体、教育、市场课程节选

For, as Rutherford has shown the assumption of the existence of nuclei, as those in question seems to be necessary in order to account for the results of the experiments on large angle scattering of the alpha rays.

因此卢瑟福,提出了原子核存在的假设，这些关于问题的假设对于,解释阿尔法粒子的,大角度散射是有必要的。

麻省理工公开课 - 固态化学导论课程节选