一本儿童书是他们参观的第一个艺术画廊。
Competition regulates the rate of profit, and profit regulates the rate of accumulation.
计算机科学的挑战不仅在于创造新技术,还在于确保它们被道德和负责任地使用。
The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.
We have three baskets for investing: yes, no, and too tough to understand.