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秦枫道：可不是，路上牵了一长串。1970年代，走过战火与重建的基隆港，此时正走向前所未有的蓬勃与发展；港里停泊著许多各式各样的商船与军舰，不分昼夜都有大船在进出，船笛声此起彼落，呈现出一片繁华景象，而支撑这一切的，正是一群生活在社会基层的劳动者--- 苦力。 基隆山区发生的一场煤矿灾变，造成许多家庭的破碎，矿坑也因此封闭，失去生活倚靠的灾民，只得扶老携幼离开矿山，结伴来到了基隆港，他们或在码头当苦力，或当杂工，或帮佣等等，从事各种劳动的工作，以“赚流汗钱，吃清心饭”的精神，为自己和家人努力且尊严的生活着；这群孤立无援的灾民、孤儿寡妇，不向命运低头，在逆境中正面思考、互相帮助，勇敢的走向新的人生。With that, Mary smiled a few times, as if to cheer herself up.板栗背上被砍了一刀，虽然有藤甲阻挡，也是受伤不轻，他忍痛回道：这都是兄弟们奋勇杀敌，非黎章一人之功。Genius actually uses the method of image to think about visual visualization with or without self-knowledge. Mind mapping is a systematic refinement and improvement of this method. It uses the form of images + branches + keywords to carry out visual thinking. The whole thinking process, logic and structural level are very clear.你还不如跟随哪一个人做事好，事情成功了，能得赏赐，失败了，你也不是领头的，祸害也不大。One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.