Small planes are generally costly, loud, require months of training and lots of money to operate, making flying to work impractical for most people.
小型飞机通常都很昂贵，噪音也大，驾驶这种飞机还需要数月的训练和不少资金，这一切都使得“飞去上班”成为大多数人不切实际的幻想。
William learnt how to fly fast propeller-powered planes and helicopters during the four-month RAF training.(See photo)
培训期间，威廉学习了高速螺旋桨飞机和直升机驾驶技术等课程。
Maybe the most valuable aspect is that it can also be used for training the three planes of motion with live visual and auditory feedback.
也许最有价值的一点在于，这能通过视觉和听觉反馈来训练运动三面。
The algorithm employs a new method to compute hyper planes to divide the training points into distinct areas so that the hidden layer of neural networks is correspondingly constructed.
给出一种求解超平面以几何分割训练点的新方法，不仅相应地构造了隐层神经网络，而且使得只需再构造一个输出层网络便可实现训练样本所描述的映射。
In fact, some people outside the base thought the Japanese planes must be new types of American aircraft on training flights.
事实上，在海军基地外，有些人看到了日本飞机，还以为是美国航空母舰正在训练新型的飞机呢。
In fact, some people outside the base thought the Japanese planes must be new types of American aircraft on training flights.
事实上，在海军基地外，有些人看到了日本飞机，还以为是美国航空母舰正在训练新型的飞机呢。
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