解释：河流川泽中有污水，深山草野中藏有瘴气，美玉也有微小的瑕疵。
数学是理性的音乐。
The future of medicine lies in personalized healthcare tailored to individual needs.
通过观察你的敌人恐吓你的手段，你可以发现他们最害怕什么。
'Jeff, what does Day 2 look like?' 'Day 2 is stasis. Followed by irrelevance. Followed by excruciating, painful decline. Followed by death. And that is why it is always Day 1.' To be sure, this kind of decline would happen in extreme slow motion. An established company might harvest Day 2 for decades, but the final result would still come.