另一方面，如果一地外的无线电信号能被探测到，那就将会是一个更为清晰且令人兴奋的时刻。

If, on the other hand, an alien radio signal were to be detected, that would constitute a more clear-cut and exciting moment.

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通常，不辞辛劳前来报告的目击者认为那些东西是来自地外的，或者可能是超越常识的军事飞机。

Typically, witnesses who take the trouble to report a sighting consider the object to be of extraterrestrial origin or possibly a military craft but certainly under intelligent control.

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这个20英尺射电望远镜阵列，分布在几英亩的区域上。 它们并不向太空发射信号，而是扫描宇宙搜寻地外的信号源。

The array's 20-foot-wide telescopes, spread across several acres, don't send messages into space but scan the cosmos for signals of extraterrestrial origin.

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Let's imagine maybe instead we just immediately dropped the pressure let the system expand against the lower pressure.

现在假设,我们很快地降低压力,让系统在低的外压力下膨胀。

麻省理工公开课 - 热力学与动力学课程节选

Milton's looking in at his own work from a distance, according to Coleridge and then Hartman.

据柯勒律治和哈特曼所言，弥尔顿是遥远地从外俯视自己的作品。

耶鲁公开课 - 弥尔顿课程节选