I experienced when I was young a noble sentiment, I still can't forget, this is my troubles.
我年轻时领略过一种高尚的情操,我至今不能忘掉,这是我的烦恼。
我喜欢为读者的想象力留出空间。
强调历史研究既要理解历史背景,又要保持学术批判性。
Real smart cars should evolve continuously like smartphones.