The old hedging strategies they had to employ were complex and often did not work. They were also difficult for small to medium-sized businesses to use.

他们过去用的各种防御风险的招数即复杂又不那么好使，尤其是中、小型企业实际操作起来更难。

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That's allowed it to serve as the medium for the growth and evolution of the most complex molecules in the universe, including enzymes, proteins, and the mother of all known living creatures, DNA.

这样一种关系使得水分子作为一种媒介，服务于宇宙中最复杂分子的生长和演化，包括酶，蛋白质和所有活着的生物的母体，DNA。

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In fact, most policy-based lending is now in the form of programmatic support for complex medium-terms structural and institutional changes rather than to help eliminate economic distortions.

事实上，多数政策性贷款目前所采用的形式，是注重实效地支持复杂的中期结构和体制变革，而不是协助消除经济扭曲现象。

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The 71-year-old Madoff pleaded guilty to the charges in 2009 and is now incarcerated at the Butner Federal Correction Complex, a medium-security prison in eastern North Carolina.

CNN: Mark Madoff death ruled a suicide, officials say

We believe this was an opportunity to respond to concerns, particularly from small and medium sized businesses, that the current procurement process is still too complex and offers too few opportunities for local businesses to gain contracts from local public sector agencies.

BBC: Government's economic strategy debate part 1

Cube offers a choice of print mode fill density: Lite, Medium and Solid in both PLA and ABS plastics with optional easy, breakaway supports for the most complex prints.

ENGADGET: 3D Systems second-gen Cube 3D printer boasts faster prints and more materials