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Equal (4): Everything in this space must be equal to 4. The answer is 4-5, placed horizontally; 4-4, placed vertically.
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Пари Нижний Новгород
协同发展，机制是基础，是保障。夯实基础，河北与京津深化机制创新，建立健全多层次、全方位、跨领域的协同机制体系——