暗能量占据了我们宇宙的四分之三，然而又是完全看不见的。我们只能根据它对宇宙膨胀所起的作用来认识到它的存在。
Dark energy makes up three-quarters of our Universe but is totally invisible. We only know it exists because of its effect on the expansion of the Universe.
自然界中绝大部分的情形是看不见的，然而我们并不否认它们的存在。
Most of what goes on in nature is invisible, yet we don't deny that it exists.
然而，在看似舆论自由的面纱背后，一只肮脏的“看不见的手”正企图空通过操控企业在网民心中的形象，于翻唇弄舌间谋取私利。
Yet, behind this veneer of free expression lies a murky world of cyber bullies and unscrupulous webmasters who are manipulating the media to either promote or smear a company's image for profit.
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