One part is a targeted search using the world's largest radio telescopes, the American-operated telescope in Arecibo, Puerto Rico and the French telescope in Nancy in France.

"其中一部分是有针对性的搜索，使用了世界上最大的射电望远镜，分别是：在波多黎各阿雷西博的由美国操作的望远镜，在法国南茜使用的望远镜。

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A sphere, in contrast, concentrates its beam to a line - which is why a "line feed" antenna was originally used at Arecibo.

球形的则不同，它会把波束汇聚到一条线上——这就是为什么阿雷西博先前使用的是“线反馈”天线。

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This means that the SETI receiver was perched permanently above the Arecibo dish at the base of the aging line feed antenna.

也就是说SETI的接收器永久的占据着阿雷西博碟型天线上老化的线性馈源的底部。

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Arecibo wasn't the first time Drake pondered how to address an alien audience.

FORBES

We could use the same radio frequencies as the Arecibo message, but why not do something a little more dramatic?

FORBES

Much of the work is done by Cornell University's Arecibo radar-telescope in Puerto Rico, which is facing federal funding cuts.

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