young氏方程
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young ' s equation 杨氏yongt方程
young s equation
杨氏方程
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In Cartagena, where one-third of residents live at or below the poverty line, it's an equation that means these young mothers have very little chance of improving their lives.
CNN: Giving teen moms the tools to change their lives
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