Boundaries define us. They define what is me and what is not me. A boundary shows me where I end and someone else begins, leading me to a sense of ownership.

引力波是观察宇宙的一种新方式，它让我们能够听到宇宙的声音。

我们必须在短期商业现实与长期环境责任之间取得平衡。

The challenge is to create harmony between the built environment and the natural world.

心理学应该是关于心理生活的科学，包括其现象及其条件。