The research is allowed in Britain, which in the years since Bush's restrictions, has become a world centre of stem cell study.

在英国该研究是允许的，自从布什的禁止令以来英国成为了世界干细胞研究的中心。

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Since then stem rust has spread from a corner of Africa’s Great Lakes to countries as distant as Iran and, recently, South Africa (see article).

从那以后，锈病从非洲大湖区的角落里蔓延至其他国家，近到南非，远至伊朗（见图）。

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Since July, as the US growth outlook slowed with a more intense fiscal drag, the Fed has signalled easier policy with quantitative easing proposed to stem steady disinflation.

7月以来，随着美国日益严重的财政拖累，预期的经济增速放缓，美联储表示采取更简易的定量宽松政策，以平稳遏止通货紧缩。

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Additionally, women have seen no employment growth in STEM jobs since 2000.

FORBES: STEM Fields And The Gender Gap: Where Are The Women?

That is prudent since stem cells are potentially powerful agents with little therapeutic history.

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The equipment is expensive and is inevitably idle most of the year because it has to process a crop quickly, since sorghum, whose stem juice is anywhere from 12% to 20% sugar, spoils quickly.

FORBES: International