在18世纪末期，地质学尚处于起步阶段。

In the late 1700s, geology was in its infancy.

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一些墙将展览19世纪到20世纪像赛尚，托马斯“哈特”本顿以及毕加索的作品照片。

Some wall labels will include photographs of works by 19th - and 20th-century artists like Cezanne, Thomas Hart Benton and Picasso.

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杜尚玩笑式的现成品《泉》是理解20世纪艺术史的关键，由它引发出了一系列关乎艺术本原的问题。

Duchamp's Fountain is the key to understanding the art history in the 20th century, for it has brought about a series of issues about the art essence.

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