Scientists, he declared, look forward, and are optimistic about the future; other intellectuals merely look back, and complain about the world's prospects.
他声称科学家向前看，而且对未来感到乐观﹔而其他知识分子只是向后看，而且抱怨这个世界的前景。
2
The plan officially declared war to water pollution, and specifically put forward the plan and goal of water pollution control.