The best time to sell a stock is almost never.
卖出股票的最佳时机几乎永远不会到来。
"We need to think about AI not just as a technology, but as a societal challenge."
自由民主可能构成“人类意识形态演化的终点”和“人类政府的最终形式”,因此构成了“历史的终结”。