对2号发动机进行大修。 A: Do an overhaul of the No. 2 engine. B: Overhaul the No. 2 engine. C: Recondition the No. 2 engine.
对2号发动机进行大修。 A: Do an overhaul of the No. 2 engine. B: Overhaul the No. 2 engine. C: Recondition the No. 2 engine.
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