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The code for creating the object is encapsulated and the specific factory class is instantiated, thus achieving the purpose of encapsulation and instantiation. Encapsulating the code that creates the object in one place can also achieve the purpose of reuse and is more convenient for later maintenance. This also means that when the customer instantiates the object, he will only rely on the interface and not on the specific implementation. Help us to better achieve interface programming rather than implementation, making the code more flexible to cope with future extensions.请教之前，杨长帆掏出了欠条先让父亲看。Later, Jiang Yong's little arm was abruptly rotten, Only two arm bones were left poking at it white and dense. He cried out in pain, but we had nothing to do. Apart from not seeing anything, the time was too short. From being splashed by this green liquid to rotting small arms to leaving only bones, the whole journey took at most about 5 seconds. Even if we didn't flush with water, it was estimated that we could delay another 2 or 3 seconds.开放二胎政策后，周凝雪为家里迎来刚出生的妹妹而忧虑，在校舞蹈团的同学，唐梓琦、唐梓瑶、徐梓轩、徐梓晗姐妹和兄妹，薛嘉慧、薛嘉凯、薛嘉旋姐弟妹三人，和同学贺思珍、童雨晨的影响下，放下心结，欣然接受了新生妹妹的到来。第二次世界大战初，三个英国军官在混战中逃出战俘营，预备穿过德军守卫区，进入瑞典后逃回国内。但是一路上危险重重，德军的严密防守使得三人寸步难行。天真的杰克•罗斯和诚恳的汤姆•威利斯最终没有得以逃脱，而尼克•马克格雷德跳上了开往伦敦的火车。临行前，杰克拜托他到了伦敦一定要找到自己的未婚妻丽兹，告诉她自己一定会想法逃回伦敦娶她为妻。作为第一个从战俘营中逃出来的军官，马克格雷德回到伦敦后被上层领导大大赞扬了一番。上级批准马克格雷德加入了M19组织，并协助巴尼将军进行英国战俘的营救行动。回到英国的马克格雷德并没有忘记杰克被捕前的嘱托，凭借秘密组织的情报优势，他找到了在医院做护士的丽兹。但是从见到丽兹的第一面起，马克格雷德就爱上了这个长相甜美的女孩，并对她展开了热烈的追求。但是丽兹深爱着杰克，只要爱人一息尚存她都决定等下去。马克格雷德对杰克产生了从未有过的嫉妒，为了让丽兹死心，他凭借自己的工作便利，伪造了杰克死在战俘营的证明。