translation.en: Although we can't bring trees and prairie plants and frogs into these environments, we are bringing images of nature into these exercise yards, putting them on the walls, so at least they get contact with visual images of nature.
translation.zh: 虽然我们不被允许将树草原植物 或是蛙类带入这样的环境 但是我们选择将自然的影像 带入运动场 挂在墙壁上，这样至少他们在视觉上 在视觉上还可以与自然接触