例如，研究人员上周说，他们已经设法从半公里远的一座电视发射台收集了足够了能量给一个小型温度传感器供电。

For example, the researchers last week said they had managed to gather enough energy from a TV station a half-kilometer away to power a small temperature sensor.

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故事发生在1993年3月的一个夜晚。苏梅克夫妇到加利福尼亚圣迭戈附近的一座天文台去观测天体，直到黎明。

The story dated back to one night in March, 1993, when mr.and mrs.shoemakers went to an observatory near San Diego, California to observe heavenly bodies till dawn.

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与此相比，丹佛的公园保留了一个机场指挥台塔，“大公园”则将把一座飞机棚改造成一个博物馆，并且保留飞机跑道的大致轮廓。

By contrast, Denver's park preserves a control tower, and the Great park will convert a hangar into a museum and retain the outline of a runway.

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