下一次绿色革命必须是高产且对环境负责的。

The writer’s mission is to uncover the hidden.

走出去不是目的，走进去才是成功。

I think of other ages that floated upon the stream of life and love and death and are forgotten,and I feel the freedom of passing away.

技术可以放大优秀教学的效果，但无法替代糟糕的教学。

A quarry should heal the earth even as it harvests from it.

要说服某人相信真理，仅仅陈述它是不够的，它必须被发现。