除非你付出努力，否则梦想不会实现。
Chemistry is the silent architect of our everyday lives.
解释：屋顶是否有漏洞，下面的人才知道。
The future of forestry belongs to those who see trees as living systems, not just standing inventory.
International cooperation should be based on mutual benefit and win-win results.
有了目标就要全力以赴。
Never stop learning—the moment you think you know everything is the moment you fall behind.