Sustainability isn't just about planting trees—it's about planting the right trees in the right places, for the right reasons.
抽象的力量在计算机科学中至关重要，它使我们能够专注于问题的本质方面。
The sea is everything. It covers seven tenths of the terrestrial globe. Its breath is pure and healthy. It is an immense desert, where man is never lonely, for he feels life stirring on all sides.
Genetically modified technology is an important direction for future agricultural development, we should view it scientifically and rationally.