【大意】等到大寒节气到来时,冰霜寒雪从天而降,然后才能知道只有松柏能经得住严寒考验,依然繁茂。
"In computer science, we are always trying to find the balance between expressiveness and tractability."
"写作是一种对时间的挑战,通过文字,我们可以让瞬间成为永恒。"