无限小在自然中的作用是无限大的。
幸福不是相信我们不需要改变；而是意识到我们可以改变。
我爱做女人，我爱做朋友，我爱做女儿，我爱做妈妈
After disasters, people lose not only their homes but their communities. Temporary housing should help rebuild both.
Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level.
人类认知存在着局限性。我们往往会根据有限的信息做出全盘的判断，这种倾向可能导致严重的误判。