逻辑学研究不仅仅是关于推理规则,更是关于思想结构本身。
在水产养殖中,耐心不仅是美德,更是必需品。
The most reliable way to anticipate the future is by understanding the present.
The best time to plant a tree was 20 years ago; the second best time is now.
你不必亲自去尿电网,才能学会不这么做。