Prevention works but has to be focused on the needs of those most likely to be exposed to HIV, and it must be sustained.

预防工作是奏效的，但必须把重点放在那些最有可能接触艾滋病毒的人群的需要上，同时也必须具有持续性。

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Now that we are on the brink of economic recovery, we must also ensure that it can be sustained.

目前我们已经开始经济复苏，但还须保证经济复苏的持续性。

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“For growth to be sustained, it must be growth that takes into account that we are living in a more and more globalized world,” says Danuta Hubner, European Commissioner for Regional Policy.

“增长要得以持续，它就必须考虑这一点，即我们正生活在一个全球化程度更高的世界，”欧盟委员会地区政策专员Danuta Hubner说。

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Because it is so valuable to a company, a brand must be cosseted, sustained and protected.

ECONOMIST: Brands

For the simple and sustained reason that applies to all efforts to find alternative energy: It must be got up from scratch.

FORBES: Biofuel From Algae: Different Prognoses