石油开采的创新不是可选的，而是可持续发展的必要条件。

A good farmer is nothing more nor less than a handy man with a sense of humus.

We must not always talk in the market-place of what happens to us in the forest.

坚持是数学研究的关键，许多伟大的成果来自于长期的奋斗。

The hardest part of design is keeping features out.

合作是农业发展的肥料。