We must balance the need for affordable energy today with the imperative of building a sustainable energy future.

现在你们不是国人的勇士，怎么能既学好学业又学好射箭呢？ 

我不想成为明星，我想成为传奇。

The advancement of mathematics is through the continuous questioning of established truths.

发明的艺术在于找出已知现象的原因。

自动控制的根本问题是在存在干扰的情况下维持期望状态。