跨境合作是解决全球森林砍伐的唯一途径。
Collaboration across borders is the only way to address global deforestation.
你能给别人的最大礼物就是你的时间和关注。
Systems have sub-systems and sub-systems have sub- systems and so on ad infinitum - which is why we're always starting over.
地理带的研究揭示了自然界的统一性,尽管它表面上看起来多样。