Principle of Use: Repairing a building increases 2 points of skill, and multiple teams can be sent to repair it at the same time.……命运将拥有歌之力量的这两人，分别引导到了残酷的旅程上。何永强笑道：奈何桥前，我等你一程也无妨。Episode 32So now, originally one object was responsible for instantiating all specific classes, now through some changes to the PizzaStore, a group of subclasses are responsible for instantiating specific classes: the subclasses of FactoryPizzaStore are responsible for implementing CreatePizza;乃是一头拴着钩爪，另一头系着绳索的物件。
