In sub Saharan Africa, plant experts are helping them grow a kind of new sweet potatoes.

在撒哈拉以南的非洲，植物专家正在帮助他们种植一种新的红薯。

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Some water experts are now demanding that existing infrastructure be used in smarter ways rather than building new facilities, which is increasingly considered the option of last, not first, resort.

一些水资源专家现在在要求要更明智地使用现有的基础设施，而不是建造新的设施，它逐渐被认为是最后而不是第一选择。

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The experts say estimates of new H.I.V.infections are down by about fifteen percent in Africa, south of the Sahara Desert.

VOA: special.2009.12.08

Experts say the new methods also increase crop production up to five times more than crops that depend on rainfall only.

VOA: special.2010.02.08

Health experts advise people who have been physically inactive to have a complete physical exam before beginning a new exercise program.

VOA: special.2011.06.28

Two new experts per month will be brought in to develop a series of 4-6 videos that are 2-3 minutes long.

NPR: YouTube's New Pay Channels Go From Campy To Kids

For each confirmed new case experts estimate a further 288 cases are likely to go unreported.

BBC: Winter vomiting bug norovirus levels dip over Christmas

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