The best writing leaves room for the reader to find their own meaning.

"The challenge in machine learning is not just to find patterns in data, but to find patterns that generalize to new, unseen data."

解释：大部分兽类的肉都是热性的，而兔肉却是冷性的，说明了肉类食材性质的差异。

种树的最佳时间是20年前，第二好的时间是现在。