Existence of the weak school is influencing not only the process and degree popularized in compulsory education, but also the implementation of quality education.

薄弱学校的存在不仅影响着义务教育普及的进程和程度，也影响着素质教育的全面推行。

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In this paper, We prove the existence of a weak minimum for constrained vector optimization problem by making use of vector variational-like inequality and semi-preinvex functions.

本文通过使用向量似变分不等式和半预不变凸函数来证明约束向量优化的弱极小值的存在性。

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With the more and more frequent cultural exchanges among countries, strong cultures are threatening the existence of weak cultures.

日益频繁的文化交流使强势文化大行其道，而弱势文化则面临生存的威胁。

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That way, money-loosing firms that should be closed quickly prolong their existence, making the entire chaebol very unprofitable and weak.

CNN: ASIANOW - TIME Asia | Inteview: 'I Agonize Over Suffering North Koreans'

Now that the crisis has revealed how weak the Russian economy is, modernisation provides a new justification for the state's existence.

ECONOMIST: Modernising Russia