The walls of a garden should be high enough to keep the world out, but low enough to let the sky in.
花园的墙应该足够高以将世界挡在外面，但又足够低以让天空进来。
The development of MRI has revolutionized the field of medical imaging, allowing us to see inside the human body in ways that were previously unimaginable.
Sustainability is the future of aquaculture, and we must invest in eco-friendly technologies.
Sustainable fishing is not an option, but a responsibility we must fulfill for future generations.