The machine operates continuously.
机器不停地运转。
The machinery operates continuously.
机器不停地运转着。
The machinery operates continuously.
日夜不停运转着的机器。
The extraction fan operates continuously during flight and also on the ground when electrical power is available to the aircraft.
当飞行中和飞机在地面接通电源时，抽气风扇是一直工作的。
The extraction fan operates continuously during flight and also on the ground when electrical power is available to the aircraft.
当飞行中和飞机在地面接通电源时，抽气风扇是一直工作的。
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