I may give you an example. We have built a total of about 3, 300 kilometers of roads and 2, 200 kilometers of railways and we are now helping Africa build communications networks.

比如，多年来，我们帮助非洲修建了总共约3300公里的公路、2200公里的铁路，现在正在帮助非洲修建通讯网络。

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While the upfront costs may have been a bit higher, more than 100 acres of turf has been converted to native grasslands on the 300-acre property, helping to reduce maintenance costs.

虽然，前期成本可能是高了一些，但在占地面积300英亩的球场上，已经有超过100亩的草坪转换为天然草场，这样可以降低以后的维护成本。

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Bill is already helping nearly 300, 000 veterans and, for the first time, their family members earn college degrees.

WHITEHOUSE: An Obligation to Those Who Serve

We increased funding for the Summer Youth Employment Program, helping more than 300, 000 young people hit especially hard by the recession.

WHITEHOUSE: Talking Jobs with America��s Mayors

More than 300 volunteers spent days helping to clear the amusement parks as well as the boardwalk and nearby playground areas, churches and streets.

WSJ: Coney Island's Rides Reopen