可持续性不是一种选择;它是农业未来的必要条件。
【释义】兄弟姐妹之间如果缺乏信任,那么彼此的感情就不会亲密。
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
Remember, hope is a good stuff, maybe the best thing, and no good stuff will fade away!