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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The existence of weak school is a difficult common problem that the world is confronted with.

薄弱学校的存在是全世界共同面临的一个难题。

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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.

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