飞机正常飞行15分钟后警示灯开始闪烁。

The plane was flying normally for about 15 minutes before a warning light blinked on.

《柯林斯英汉双解大词典》

飞机正常飞行时，舱门与机身平整贴合。

In normal flight the hatch doors fair into the fuselage.

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一到二磅的超压是由正常飞行高度的超音速飞机制造的。

Overpressures of 1 to 2 pounds are produced by supersonic aircraft flying at normal operating altitudes.

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