ET could, for example, send out a neutrino beam at precise (and non-naturally occurring) energy levels that would be sure to catch a scientist's eye.
例如，外星人可以用精确的原子能级发出肯定能被科学家的眼睛捕捉到的中微子束。
2
It sounds like something out of science fiction - a huge swath of the moon covered with solar panels to beam captured energy back to Earth.
用巨大的太阳能电池板将月球包裹，再将收集的能量反射回地球，这也许听起来像科幻电影的情节。
3
After that last frame was radio-transmitted back to Earth, the probe mysteriously disappeared; according to the Russians it was destroyed - possibly knocked out with an energy pulse beam.