Is to define a main method calculate in the AbstractCalculator class, calculate () calls spilt (), etc. Plus and Minus inherit the AbstractCalculator class respectively, and implement the call to subclasses through the call to AbstractCalculator, see the following example:
红鸾清澈的眼中没有一丝表情，喃喃道：那里住的百姓少，都是军队。
凭什么。
他乐呵呵地宣布，又转头问老婆子，他娘，你可有啥要说的？张老太太老脸笑得开花，连连摇头说没有啥要说的，却又望向板栗道：就是板栗，你啥时候娶媳妇回来，奶奶睡着了也笑醒了。
沈悯芮淡然叹道，说好的，最后一段路，一起走吧。
辜战与止戈两人再度陷入兄弟阋墙的局面，就在两人打得难分难舍之际，辜战的战力指数破万点，正式和止戈并列到KO.2。
"Deliberate Practice": Let your day-to-day work shine brightly.
影片讲述了退伍老兵(安东尼奥·班德拉斯饰)在一个购物商场当保安，然而他工作的首晚，一个被歹徒追击的女孩跑到商场寻求庇护的故事
克劳迪娅和玛丽亚漫步在危地马拉城的街道上。克劳迪娅在一家呼叫中心工作，对周围的世界不感兴趣。她和积极分子祖父住在一起，祖父试图说服她加入他的事业。玛丽亚不像克劳迪娅，她更自然，和母亲住在城市的郊区。混乱的街道上充斥着常见的虐待、无情的警察和迷人的秘密角落。一天晚上，当他们被三个人袭击时，一切都变了。尽管他们设法逃走了，克劳迪娅却面临着选择复仇或听从祖父建议的两难境地。
A circular silk screen with a diameter of 2.5 mm is placed on the silk screen layer to surround the test pad to identify the position of the test point, and the number of the test point is marked beside the silk screen, such as X1, X2, …, etc. The test points shall not be covered with solder resist or text ink.
这是大叔和前大叔美少女绝对不能爱上的异世界爱情喜剧
建作坊？绿萝微微疑问，这个新机构难免让人疑惑好奇。
Having evidence-based medical basis (e.g., reference to tumor diagnosis and treatment guidelines);
Boxing
他用宝石国的语言喊的，因此两人立即就听见了，忙就出来了。
故事的舞台回到星慧的高中时代。曾经不起眼的美术社社员慧，因为对网球部男生水岛翔一的感情，有一天突然变得能够听到他内心的声音。因为发现了读取人心这一特殊能力，对水岛的淡淡爱恋以及慧的高中生活，都发生了巨大的变化。
香乃馨（岑丽香 饰）是含着金汤出生的富家小姐，在电视台担任记者的职位，她和庄家朗之间碰擦出了爱情的火花。缪星河当然希望这桩姻缘能够修成正果，但商映虹得知此事心中如同倒了五味瓶一般的不是滋味。与此同时，商映虹的儿子翟有声（罗仲谦 饰）又爱上了缪星河那不成器的外甥女，两家人的恩怨没完没了。
I/O multiplexing refers to using a thread to check the ready state of multiple file descriptors (Socket), such as calling select and poll functions, passing in multiple file descriptors, returning if one file descriptor is ready, otherwise blocking until timeout. After getting the ready state, the real operation can be executed in the same thread or thread execution can be started (such as using thread pool).
I have been looking back at Liu Guiduo, did not dare to look at Song Guochun, thinking of giving him another chance. In the end, with less than one meter left, I turned to look at Liu Guiduo again. As a result, the tied iron fell in front of my eyes and flew out. I heard a splash. When I looked again, there was no one left. "
