弦理论提供了一个框架，使得量子力学和广义相对论能够和谐共存。

Quality is the life of an enterprise and the cornerstone of a brand.

The environment is where we all meet; where we all have a mutual interest; it is the one thing all of us share.

全球贸易的未来取决于主要经济体能否在WTO框架内调和分歧。