More homes are being built next to forests, in what experts call the " wildland-urban interface" (WUI).

越来越多的房屋建在森林附近，专家们称之为“森林-城镇交界域”（WUI）。

[Joe] More people across the country are moving into the so called WUI.

- [Joe] 全国越来越多的人正在进入所谓的 WUI。

A 2018 study estimated that roughly a third of American homes were in the WUI. The problem is acute in California.

2018年的一项研究估计，大约三分之一的美国家庭居住在WUI地区。这个问题在加州非常严重。