The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu
Different things have different cycle days. As for the word cycle, it has a special meaning in Chinese, that is, one week, but it is generally not used in this way. It is only considered to be used in this way in very special places. If the menstrual cycle is normal, it is 28-30 days, and some girls have relatively long or irregular menstrual cycles.
该剧是国内首部讲述80后婚育生活的电视剧。讲述男主人公陈百峰与女主人公安可的婚后生活为主线 ，以陈百锋与耿耿复杂的家庭状态为背景，辅以陈百锋的死党钟诚与安可的闺密谢小菲男追女的过程、耿耿与警察小濮的相识相恋女追男的爱情副线。
Let the winners of team a and team b play against team c
(This picture is really casual. I don't know where the characters were picked out.)
These are the inherent characteristics of the six-channel model at present.
长此以往，学业自然长进了。
现在的天下形势已经不能再用之前的楚汉相争，其他小诸侯环绕来形容了。
《独孤九剑》震撼登场。
Physical Attack +30 (Maximum +35)
然而正当花准备与她的目标联系时，一个中年男子突然出现在学校并寻找俊一。与此同时情况直转而下，美国派出了特种部队到了这所学校来追捕那名中年男子。
与此同时，一个藏有邪恶力量的不明飞行物正以极高的速度接近地球，它所带来的外星人加莱克萨哈（瑞恩·威尔森 Rainn Wilson 配音）扬言要摧毁地球，毁灭人类。人类奋起反抗，但是他们的武器在加莱克萨哈面前全部败下阵来。地球危在旦夕，人们把命运寄托在了苏珊及其怪物朋友的身上……
1. Create a new "test" folder under the root directory of disk D, create a new txt file in the "test" folder, and rename it to "test1. Java".
落魄拳手维纳斯偶遇来泰国找拳王泰桑代言的格斗游戏开发者小亮。维纳斯想要左右逢源狠捞一笔差价，结果被泰桑老板发现抢走所以资金。为了弥补小亮，维纳斯决定参加去拳王大赛拿冲击奖金。在小亮和那瓦的训练下，维纳斯一路晋级，拿到决赛的资格。面对到手奖金和继续挑战冲击拳王的机会，维纳斯选择离开。这时小亮也得知维纳斯竟然是自己曾经的偶像蒙面拳王威霸天，小亮决定放弃奖金并向泰桑发起挑战。希望隐退的维纳斯与小亮发生争执，不欢而散。最终维纳斯还是站在了擂台上，在与泰桑的比赛中证明了自己，也弥补了遗憾。
指挥使指着树林道，我们可以走小路，入林各个击破。
次日，大苞谷将黛丝和珊瑚交代给众姐妹，自己陪着英王世子整日周旋在各国使臣之间，忙得晚饭也没空回来吃。
可是思虑许久，苦无结果，颓然坐在王座之上，沉默不语。
风光秀美的象牙山又迎来了极其闹腾的一年。嘚嘚瑟瑟的谢广坤（唐鉴军 饰）祖坟冒了青烟，王小蒙（毕畅 饰）居然给他生了龙凤胎孙伙计，这可把广坤时刻想要显摆的心美坏了，他大张旗鼓要搞庆祝，这期间却忽略了腾飞的感受。广坤的死对头刘能（王小利 饰）看在眼里，气在心头，一门心思地要干帮超，将希望全都寄托在闺女刘英的肚皮上。亲家赵四（刘晓光 饰）的生意越做越红火，眼瞅着就不把刘能放在眼里了，新的矛盾由此产生。香秀即将迎来新生命，但她和李大国的婚姻却走向破裂边缘。新的政策出台，让山庄的效益直线下降，王大拿（赵本山 饰）发愁之际，后院似乎也见到了火苗子。
