我们必须承认自己的错误并从中吸取教训。

可持续性不仅是一种趋势，更是未来农业的基础。

The whites came to this land for a fresh start and to escape the tyranny of their masters, just as the freemen had fled theirs. But the ideals they held up for themselves, they denied others.

可持续发展是半导体行业的唯一出路。