梦境与现实之间的界限比我们想象的要薄。
The border between dream and reality is thinner than we think.
煤炭不是问题所在,问题在于我们如何使用它。解决方案在于更清洁的技术和更好的利用。
The city is the greatest invention of mankind, and architecture is its language.
完美数如同完美的人一样稀少。
Never try to discourage thinking, for you are sure to succeed.