One can obtain high birefringence due toa sharp index contrast between air and silica in photonic crystal fibers.

在光子晶体光纤中，人们利用空气和氧化硅之间的高折射率对比，可以得到很强的双折射。

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Dark fiber-rich whole wheat bread is lower on the index; its spike is slightly less sharp.

纤维丰富的全麦面包拥有较低的血糖指数，它造成的血糖上升很少。

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He has set up limit orders for around a third of his clients to buy either a stock index fund or a commodity ETN in the event of a sharp swing.

他为大约三分之一的客户建立了限价订单，以便在发生急剧震荡的时候买进一只跟踪股指的基金，或者是一只跟踪大宗商品行情的ETN。

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The market was weighed by sharp moves in large index constituent Fast Retailing Co.

WSJ: Tokyo Shares End Sharply Lower

Early safe-haven buying gave way to heavy selling pressure that was due to strong gains in the U.S. dollar index, sharp losses in crude oil and other commodity markets, profit-taking pressure and weak-handed long liquidation.

FORBES: Comex Gold Ends Sharply Lower amid Stronger U.S. Dollar Index, Lower Crude Oil

The sharp decline in the NAPM index in December gave an early indication of the slowdown, and was one of the factors that led the Fed to make its first rate cut in early January.

BBC: US manufacturing remains weak