CRUISE altitude, An altitude or flight level maintained during enroute level flight.

巡航高度，在航线上水平飞行期间，飞机所保持的高度或飞行高度层。

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Let's begin with Level Flight.

咱们从水平飞行开始。

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Let's begin with Level Flight.

咱们从水平飞行开始。

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