?早白垩纪
... 下白垩纪 cretaceous 早白垩纪 gault series 白垩纪的化石 cretaceous fossils ...
?中绿砂统
... 水位时间曲线 gauge hydrograph; stage-time curve 中绿砂统(下白垩系) Gault series 高斯(磁力单位) Gauss ...
For today's installment of our series, Portraits of Poverty, NPR's Charlayne Hunter-Gault reports from Malawi in southern Africa.
NPR: The Missed Education of African Girls
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