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rotor
mastery UK /ˈɹəʊ.tə/ US /ˈɹoʊ.tɚ/noun
card 1 of 8 · fill in the blank
The pilot adjusted the rotor _____ to change the helicopter's altitude.
card 1 of 8 · fill in the blank
The pilot adjusted the rotor _____ to change the helicopter's altitude.