A family that started a successful business making skin care products donated the land.

一个以护肤品成功起家的家庭捐赠了这片土地。

To date, their donated land has inspired the creation or expansion of 15 national parks.

迄今为止，他们捐赠的土地已建造或扩建成15个国家公园。

In 1791, Maryland donated land which is now the site of Washington, D. C., the capital of the United States.

1791年，马里兰州捐赠了位于马里兰州和弗吉尼亚州边境之间且如今是美国首都华盛顿特区的土地。

The zoos benefactor donated the land on the condition that there were always at least 50 primates in the collection.

有捐赠者捐出土地来兴建动物园，不过条件是最少有 50 种灵长类动物在园内生活。

The family has also worked in environmental conservation, donating land, and establishing more than 20 national parks all around the country.

该家族还致力于环境保护、捐赠土地，并在全国各地建立了 20 多个国家公园。