A few years ago, the US Forest Service studied trees in Chicago.

几年前，美国林业局在芝加哥研究树木。

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She told us her grandfather first came to Chicago in 1906, but returned to Poland in 1932.

她告诉我们她祖父1906年第一次来芝加哥，1932年又回了波兰。

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His exhibition and tour of the us begins this week and runs in Los Angeles, Chicago and Houston through to November.

他的美国巡展将于本周开始，先后在洛杉矶、芝加哥、休斯敦等地举办，一直持续到11月。

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He was cited for his effort to promote a better relationship between the US and the Arab world and on the local level, with Chicago's Arab American community.

VOA: standard.2010.05.20

He moved to Chicago in the US in 1956, where he lived until 1983, when he was expelled for having concealed his Nazi past.

BBC: Former Auschwitz Nazi guard Hans Lipschis found in Germany

In the past four years he has cycled from Boston to Chicago in the US, the length of South Island, New Zealand, and Adelaide to Brisbane in Australia.

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The same happened within the US in Chicago and San Francisco around 1900.

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