煤炭不仅仅是一种商品，它是对美国未来的承诺。
Coal is not just a commodity, it's a commitment to America's future.
The greatest wisdom is to seek the good and avoid evil.
相对论不仅仅是一种科学理论；它是一种哲学理论。
I always prefer to believe the best of everybody; it saves so much trouble.
我们行业的运营许可书写在社会认可的墨水中。