质量是工程的生命线，任何时候都不能放松对质量的追求。

The best ideas often come from listening to those closest to the problem.

We must invest in the next generation of farmers—they hold the future of food in their hands.

爱国不是选择，而是责任。

可持续发展不仅是一种趋势，更是我们对后代的责任。

解释：先前所使用的，现在或许要抛弃。现在要抛弃的，将来或许会用到。