This hardly qualifies as unusual: Detroit's population has cratered from around 2m in 1950 to below half that today; the city abounds in empty homes and vacant lots.

这可算不上什么稀罕事：底特律1950年的人口为约二百万，如今的人口还不到这个数字的一半；今天，在这个城市里，空屋、空地随处可见。

youdao

We have one vacant seat for the 9:30 train because someone cancelled it half an hour ago.

我们9：30的火车上还有一个空座位，因为半小时前，有人来退了票。

youdao

In the summer of 2011, he purchased two vacant half-acre lots with large oak trees that overlook the Dallas Country Club golf course.

WSJ: From Oil, a Land Rush��WSJ Mansion

This shows that one-half of the places they have reserved for dalits and tribal people are vacant.

ECONOMIST: Education and caste in India