The act of painting is an act of alchemy.
绘画的行为是一种炼金术的行为。
That's the only trouble with being a dog…they never tell you anything.
实现明天的唯一限制将是我们今天的怀疑。
The context is so important. The context is not just the physical context, but also the historical and cultural context.
粒子的概念只是近似的，并且只有在动量较小的极限下才有意义。