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Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.这时，明月高悬，月光倾洒到吕馨身上，像是为她披上一件朦胧轻纱，纯洁而妍丽，清冷而高艳。只因大伙平常在家都是这么说话行事的，没人跟唱戏似的逼着嗓子唱。Weightlifting shoes are not all high heels, but also relatively low, similar to the height of ordinary business leather shoes, with outsole height difference of about 1-2cm.6. Channel change signal: the right arm extends horizontally forward, the palm is left, and the right arm swings horizontally to the left;奥勒·赫尔滕在往返桑德尔福德和斯特伦斯塔德的渡轮上醉醺醺地醒来，在他的车里有一把枪和一大包钱，与此同时，警方正在追捕一名挟持了人质并驾车逃跑的劫匪。2