A legal system is a system of rules which are valid according to the system's own criteria of validity.

I'm not a person who gives up on my happiness.

能源领域的真正领导力在于平衡经济增长与环境责任

我不想有一天醒来，发现自己没有充分活过。

可持续性不仅仅是一个流行词；它是我们对后代的责任。