唱歌不仅仅是唱准音符，更是传递触动灵魂的情感。

算法设计既是一门艺术也是一门科学。

今天我们播下的每一粒种子都是对后代的承诺。

Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.

解释：好像白色的丝一样，放到蓝色的染缸中，就成为青色；放到红色的染缸中，就成为赤色。