女士们，先生们，……我在仔细考察了我们的大半个州之后，今晚站在了这里。
Ladies and gentlemen... I've traveled over half our state to be here tonight.
半个世纪之后，西宾夕法尼亚州由于它丰富的石油资源变成了一个新兴城市。
A half a century later, western Pennsylvania became a boomtown, built on its substantial petroleum reserves.
直到智能电网的出现，这大半个世纪来，整个电网基本上没有更改，马萨诸塞州能源与环境事务秘书长称。
The power grid has basically been the same for the better part of a century, says Ian Bowles, Massachusetts' secretary of energy and environmental affairs. That is, until the smart grid.
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