1. The plane's engines roared as the airscrew spun rapidly.(当螺旋桨迅速旋转时,飞机的引擎咆哮着。)
2. The helicopter pilot skillfully maneuvered the airscrew to change the direction of flight.(直升机驾驶员熟练地操作螺旋桨改变飞行方向。)
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