我从不相信极限。

天然气作为清洁能源，将在我国能源结构调整中发挥重要作用。

I don't think that you have any insight whatsoever into your capacity for good until you have some well-developed insight into your capacity for evil.

我不追逐成功，我追求卓越。

波函数不是描述单个系统，而是描述系统的集合。