随机评估可以帮助我们了解发展中哪些措施有效，哪些无效。
Human life can not be measured by the length of time. When the heart is full of love, the moment is eternal! ——It really can’t be measured by the length of time.
比喻政府干预初衷虽好，但结果可能适得其反。
The most beautiful things in life are not things, but moments.
If we want clean air and water, we must start by protecting our forests.