用心栽花、施肥、灌溉,花却总是不开;无意间将柳条插在地上,却长成了郁郁葱葱的柳树。
When we write programs that "learn", it turns out that we do and they don't.
数学的力量来自于它的抽象和概括能力,将具体问题转化为普遍真理。
We must treat soil health as the foundation of our food security.