Pilot: Wilco.... Air Canada at Flight Level 90.
飞行员：遵守指令。……加拿大航空飞行高度90。
To the level of a pilot capable of performing beyond the basics of Sideways Flight .
第六级属于高级程度，使操控者有能力执行基础的横向飞行。
The level of a pilot capable of performing beyond the basics of Backward Flight.
第五级属于高级程度，使操控者有能力执行基础的后退飞行。
The level of a pilot capable of performing beyond the basics of Backward Flight.
第五级属于高级程度，使操控者有能力执行基础的后退飞行。
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