美以聯手攻擊伊朗致哈梅內伊喪生以及伊朗的報復性打擊——我們目前知道什麼？
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The \(n\)-dimensional hyperbolic space \(\mathbb{H}^n\) is the unique (up to isometry) simply connected, complete Riemannian manifold of constant sectional curvature \(K = -1\).