感觉就是秘密。
最有效的调试工具仍然是仔细的思考，再加上明智地放置的打印语句。
You cannot swim for new horizons until you have courage to lose sight of the shore.
The future of food security lies beneath the waves.
写文章必须追溯六经的本源，并参考《史记》《汉书》的写法。