每一种化合物都必须有确定的组成，这可以用其元素的符号来表示。

运营良好的采石场是精确、安全和尊重的交响乐。

I don't do black music, I don't do white music, I make fight music for kids who kick over lunch tables.

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.

互联网正在成为明日地球村的广场。

越是往后反省，越看得清前方。