The best known is "Into Thin Air."

VOA: special.2010.06.30

This says, if you want to be in the air for a long time, so you may think that 90 degrees is the best angle.

也就是说,如果你想在空中停留更久,你也许会认为 90°是最佳选择

耶鲁公开课 - 基础物理课程节选

Retired U.S.Air Force General Harry Raduege served on the commission that provided President Obama with recommendations on how to best protect the United States from cyber attacks.

VOA: standard.2009.08.11

Speaking to reporters Friday, Secretary Gates would not be drawn publicly into the debate over whether the troop-intensive counterinsurgency strategy is best or whether a more limited commitment involving air strikes and Special Forces operations would be better.

VOA: standard.2009.10.23