Maturity High, proven technologies Frequent use of less mature and emerging technologies.

成熟度高成熟和经验证的技术经常使用的不太成熟的新兴技术。

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Despite an overall improvement in their credit quality since 2000, corporate sectors in many emerging markets continue to face considerable maturity and currency mismatches on their balance sheets.

尽管自2000年以来信贷质量得到全面改善，但许多新兴市场的公司部门继续面临需要偿还相当多到期债务和它们的资产负债表上货币不协调的问题。

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Yield to maturity on emerging-market debt as measured by the JP Morgan EMBI Global Diversified Index is roughly 5.37%, compared with roughly 2% for the U.S. 10-year Treasury bond.

WSJ: The Allure of Emerging-Markets Bonds

Indeed finance officials plan to issue a new bond (which would reopen the market for emerging economies) to lengthen the maturity of the public debt.

ECONOMIST: New cabinet, old problems

Emerging energy sources traditionally receive federal support until they reach maturity.

FORBES: 3 Myths About America's Clean Energy Future