That’s probably true, even though scientists are now discovering other planets outside our solar system. Perhaps one day we will find that we are not the only intelligent beings in the universe, and perhaps we will be able to discuss issues of interspecies ethics with such beings.
或许他们是对的，现在我们的科学家正在太阳系之外寻找其他星球。也许有一天，我们会发现我们并不是宇宙中唯一存在的智能生物。或许我们会讨论和这些不同物种之间的关系问题。