可持续性不是一种选择;它是农业和食品生产未来的必需品。
No, not rich. I am a poor man with money, which is not the same thing.
我们今天做出的每一个决定都会在未来几十年对整个海洋生态系统产生影响。
阅读是在不离开原地的情况下发现新的视野。
The study of cognition is the study of how human beings understand their world.