有时候要大胆，有时候要小心，一个聪明人知道什么时候该怎么做。
There is a time for daring,and there is a time for caution, and a wise man understanding which is called for
The most important things are hardest to tell,because words shrink their importance.It's not easy to let strangers care about the good things in your life.
跨行业合作是解决塑料废物危机的关键。
