统一自然界基本力的追求是现代物理学中最大的挑战之一。
The quest to unify the fundamental forces of nature is one of the greatest challenges in modern physics.
If you can make meat directly from plants, why would you need an animal?
我们工作中最大的回报是知道自己带来了改变。
Fisheries management must be adaptive to changing ocean conditions.
Everyone is in favor of free speech. Hardly a day passes without its being extolled， but some people's idea of it is that they are free to say what they like， but if anyone else says anything back， that is an outrage.