Then oil prices soared, resulting in a seven-fold increase in income per head in Yemen, where elaborately carved rhino-horn dagger handles are prized as a sign of status and wealth.

接着，全球石油价格出现飙升，结果致使也门的人均收入获得了7倍的增长，在那里，精美犀牛角雕刻的剑柄被视为地位与财富的象征。

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Adding folic acid to diets costs four or five cents per head per year, with a payback of perhaps 120-fold.

而在食物中添加叶酸仅需每人每年四到五美分，其收益可能达120倍之多。

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Conclusion Part of annular ligament or synovial fold interposed between the capitellum and the radial head could explain the mechanism of the pulled elbow.

结论环状韧带或滑膜皱襞嵌入肱桡关节间是引起牵拉肘发病的重要因素，该机制可以解释牵拉肘的临床表现。

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Marc Chandler, head of global currency strategy at Brown Brothers Harriman, said this data has two-fold implications.

FORBES: METALS OUTLOOK: Gold Prices Could Correct Next Week, But Trend Remains Up