Learn about the Past Participle (3) : used as Adverbial.

学习过去分词的用法：用作状语。

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It's curiosity, not suspicion, that entices many older users to learn about the past on the Internet.

正是好奇心，而非猜疑，诱使许多老年用户在互联网上了解过去。

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They learn about the past chiefly from textbooks but also through such activities as field trips to historical sites and visits to museums.

他们主要是学习课本，有时也到历史古迹实地踏访并参观博物馆。

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Visitors to Harpers Ferry can learn about America's history as it brings the past to life.

VOA: special.2009.11.06

"The fact that tissue was preserved for more than a few decades helps us to learn more about past disease and actually eventually help to avoid these kinds of diseases in the future."

VOA: standard.2010.05.05

"Most of the pictures I used were all taken before I was born, and it was a great way to learn about the past, " she said.

CNN: Connecting the past to present tougher than it looks

Visitors learn about the astounding past wealth of Long Island's Gold Coast, taking in areas such as Sands Point and Glen Cove.

BBC: How real is The Great Gatsby's playboy island?

You can also learn more about our efforts over the past year in these critical areas by exploring our Open Government Initiative website, and by reading our recently released Progress Report to the American People.

WHITEHOUSE: Fighting Against Special Interests and For the Public Interest: A Year of Change | The White House