马里兰大学帕克学院以及巴尔的摩的沃尔特斯艺术博物馆的研究人员正利用纳米技术防止银的表面生成肮脏的硫化物污渍。

Researchers at the University of Maryland, College Park, together with the Walters Art Museum in Baltimore, are using nanotechnology to prevent that nasty sulfide tarnish from forming.

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温得和克是纳米比亚的行政中心，市内有行政机关大楼、医院、国家博物馆、中等学校和非洲奥古斯丁高等中学。

Windhoek is Namibia's administrative center, the city has the administrative authority buildings, hospitals, national museums, secondary schools and the African Augustine High school.

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温得和克是纳米比亚的行政中心，市内有行政机关大楼、医院、国家博物馆、中等学校和非洲奥古斯丁高等中学。

Windhoek is Namibia's administrative center, the city has the administrative authority buildings, hospitals, national museums, secondary schools and the African Augustine High school.

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