可能是公鸡在啼叫，但下蛋的是母鸡。
It may be the cock that crows, but it is the hen that lays the eggs.
Sustainability isn't a choice; it's our responsibility to future generations.
暴力的减少可能是我们物种历史上最重要却最不被重视的发展。
Time is a slippery thing: lose hold of it once, and its string might sail out of your hands forever.
你知道，当你悲伤的时候，就会喜欢看落日了。
The most sustainable building is the one that is already built.