煤炭使美国在世界范围内保持竞争力。

心灵是一个相互作用元素的复合体。

I don’t mind losing as long as I see progress.

The PAC learning framework provides a formal way to quantify the learnability of a concept class.

我们生产的每一块塑料都应该有完整的生命周期规划。

Innovation is at the heart of what we do. It's how we meet the world's growing energy needs while reducing our environmental footprint.

没有人是自由的，甚至连鸟儿都被天空束缚。

真正的作家永远是一个流亡者，即使在自己的国家也是如此。

Where I am, I don't know, I'll never know, in the silence you don't know, you must go on, I can't go on, I'll go on.