可持续发展要求我们在经济增长和环境保护之间取得平衡。
Sustainable development requires us to balance economic growth with environmental protection.
好的悬疑故事应该让读者一直猜测到最后,但所有线索都必须存在。
实现明天的唯一限制是我们今天的疑虑。
I'm interested in the weak materials, the materials that people don't think can be used for permanent structures.