The last time this volcano did erupt in the early 19th century, he says,it lasted two years.

VOA: standard.2010.04.16

It is an electron beam. In the 1890s, the latter part of the 19th century a very fashionable word was "ray."

那是个电子束，在十九世纪九十年代，就是19世纪末,一个很时髦的词汇-“光线“

麻省理工公开课 - 固态化学导论课程节选

In fact,Cape May now boasts the single greatest concentration of late-19th Century architecture in the world!

VOA: standard.2010.03.15

"In terms of their development, they have remained in the 20th and even the 19th century."

VOA: standard.2010.02.03

He agrees with the warning of 19th century German writer Heinrich Heine who wrote, "Where they burn books, they will in the end burn people."

VOA: standard.2010.03.17

In the late 19th Century, Johnstown was the nation's mightiest steel center - more prosperous than Pittsburgh - turning out steel rails and barbed wire.

VOA: standard.2010.04.26

In the vote Tuesday, New York's Landmarks Preservation Commission denied landmark status to the 19th century building that now occupies the site of the proposed 13-story, Commissioners ruled that the building, which is not within view of ground zero, lacks distinctive architectural or historic value.

VOA: standard.2010.08.03