当人高兴时，他自身是和谐的，与四周的环境也是和谐的。

When man is happy, he is in harmony with himself and his environment.

youdao

我想到了在这片空旷、荒芜的沼地上运动着的这个凶手，愈来愈认为四周的环境叫人不安。

I thought of this killer out on the empty, wild moor, and I felt more and more uncomfortable about my surroundings.

youdao

此外，用户必须总是拥有观看四周的环境的自由，虽然这会对您的内容的设计提出新的要求。

Furthermore, users must always have the freedom to look all around the environment, which can add new requirements to the design of your content.

youdao