They can provide a useful overview—an aerial map, as it were, to familiarize you with the main landscape features to be encountered during a course.

它们可以提供一个有用的概览——一个航拍图，可以让你熟悉课程中遇到的主要景观特征。

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NHK television transmitted aerial images of flood waters engulfing the airport, where survivors clustered on the roof of the main building.

NHK电视台传送的空中图片，洪水淹没机场，幸存者都聚集在主建筑的房顶。

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Agents determining that Kuwaiti was living there used aerial surveillance to keep watch on the compound which consisted of a three-story main house a guesthouse and a few outbuildings.

断定Kuwaiti就居住在此的特工们使用空中侦察来监视这座由三层的主房，一座客房和一些外屋组成的院子。

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Before this vibrant encounter at the Mbombela Stadium, Italy coach Marcello Lippi had identified New Zealand's aerial threat as the main danger to his team - and that warning proved prophetic within just seven minutes.

BBC: Italy 1-1 New Zealand

Until now, the main French effort against the rebels has been aerial bombardment of their positions using jet fighter planes and helicopters.

BBC: Mali: French troops head north into unknown

Agents, determining that Kuwaiti was living there, used aerial surveillance to keep watch on the compound, which consisted of a three-story main house, a guesthouse, and a few outbuildings.

NEWYORKER: Getting Bin Laden