Sean: Plus, for fun, I've been sitting in on a course on American 11 Literature.

西恩：加上我旁听着好玩的美国文学课程。

youdao

CONTROLLER: "American 11, Boston Center, Roger, climb, maintain level two eight zero."

CONTROLLER：“美航11号航班，这里是波士顿控制中心，收到，继续攀升并维持在280区域。”

youdao

AA11: "Boston Center, good morning, American 11 with you passing through one nine zero for two three zero."

AA11：“波士顿控制中心，早上好，美航11号航班正通过190区域进去230区域。”

youdao

Bahaji is believed to have provided support for the hijackings of American airplanes on September 11,2001.

VOA: standard.2009.10.30

He says those questions became even more difficult to answer after the 9/11 attacks by a group of Sunni Arab terrorists that killed 3,000 people on American soil, and after the massive U.S.military deployments in Afghanistan and Iraq.

VOA: standard.2010.03.18

At 08:46 on 11 September 2001, American Airlines flight 11 hit the World Trade Center's north tower.

BBC: 9/11 debris found in New York identified as plane wing

The two monkeys were part of the joint Russian-American Bion 11 mission in 1997, flying aboard the space shuttle.

BBC: 'Hidden health risks' of space travel

The 131, 000 American and 11, 000 British troops in Iraq have so far proved insufficient to stop the guerrilla attacks by pro-Saddam loyalists.

ECONOMIST: Finally, a new UN resolution