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One practical way forward is blended finance, where philanthropic and public capital absorb the early, higher‑risk stages of a project, reshaping the risk‑return profile so commercial investors, normally wary of such investments, can come in at scale. This is not a theoretical solution: More than 1,100 blended-finance transactions totaling $213 billion show that well-designed catalytic structures can unlock private capital.。关于这个话题，谷歌提供了深入分析
= {Tokyo: 82.4, Paris: 71.6, New York: 87.8, London: 64.4, Sydney: 59}
\(f^{-1}\) is continuous (images of open sets are open, i.e. \(f\) is an open map).