What we understand is that if a single schema is instantiated, it will only be instantiated once. To implement a single schema, we simply use a variable to identify whether the class is instantiated. If it is not instantiated, then we can instantiate it once. Otherwise, we will directly return the instantiated object.
略一停顿又道：叮嘱他们些，这是去迎亲，不是上阵杀敌，别凶巴巴的跟狼一样。
在华天电器商城小家电部当主任的廖扬一直梦想着能够拥有一辆车，他终于说服了媛媛先买车后买房，租房结婚对于年轻人来说可能无所谓，但是在两家老人那里却炸开了锅。
众人忙都答应。
以都市单身人士为背景的情景喜剧，六位主角分别是：莫妮卡·盖勒，职业是厨师，爱管闲事，不服输，小时候肥胖，成绩不如哥哥；瑞秋·格林，莫妮卡的高中同学，从与牙医未婚夫的婚礼上逃离，未经世事的医家千金小姐，个性娇纵，没什么主见，由不愁吃穿到自食其力吃尽苦头，本来是“中央咖啡厅”的服务生，后来进了服装公司做采购助理；罗斯·盖勒为莫妮卡的哥哥，于高中时即暗恋妹妹的同学瑞秋，但始终不敢表白，个性有点死板，职业是博物馆考古学家；钱德·宾为罗斯的大学同学，喜好逞口舌之利，有点神经质；菲比·巴费为莫妮卡的旧室友，后因受不了其洁癖而搬走，智商较低，但傻得可爱；乔伊·崔比昂尼与钱德为共租公寓的室友，四肢发达，头脑简单，是一个典型的在贫困边缘挣扎的演员。
"I have to go home to cook for my mother. She works in a factory and is very hard. She is a person who hurts all over when she doesn't work and feels uncomfortable everywhere. She is all right when she works."
Family name: Rhamnaceae
Time relays can be divided into AC relays and DC relays according to different power supply requirements, which are respectively used in AC circuits and DC circuits. Time relays can be divided into power-on delay relays and power-off delay relays according to different functions. Time relays can be divided into sealed relays, small relays and micro relays according to their shapes. In addition to the above classification of time relays, time relays also include special types of relays such as resonant relays, stepping relays, proportional relays, etc.
Manaka is now connected to the following 9 subway cards across Japan, all of which can be used throughout Japan.
见郑氏牵着苞谷跟了出来，忙俯身抱起小儿子送到张大栓面前，苞谷这么小，跟爷爷坐轿子去。
当红电视情感节目主持人聂冰（林嘉欣 饰）在年过三十之际突然感到情感上的困惑：她的父母婚姻失败，母亲（丛珊 饰）整日唠唠叨叨，父亲（朱时茂 饰）娶了聂冰的小学同学，追求者由爱生恨恶语相向……这一切都让她疲惫不堪。
四十万秦军和赵**民是参演的演员，至于其他各国诸侯，义军是想要做个看客，还是参与其中，选择全在自己。
故事发生在一个平行世界，真角大古、飞鸟信、高山我梦从小在一起长大，那时候的他们很喜欢奥特曼。有一天三人与一个红鞋少女相遇并许下一个约定。但岁月流逝，大古、飞鸟和我梦长大成人，过着普通人的生活。
1. As a math student, I have studied math for four years, and I don't agree with the bibliography you gave at random. First, there is no step type and it is unfriendly to beginners. Your title and the purpose of writing this series are probably for Xiaobai to see. So, may I ask, a Xiaobai needs to see the principle of mathematical analysis? ? Is it necessary to look at Princeton Calculus Principle to learn artificial intelligence? ? In my shallow understanding, the biggest difference between mathematical analysis and advanced mathematics is the same theorem. High numbers only require that they can be used. Mathematical analysis is rigorous and will definitely give proof. However, for the mathematics needed in most artificial intelligence, you need to prove the correctness and completeness of this theorem in your work? ? I'm afraid the project will be closed long ago when you prove it. You replied to me that this is only a bibliography, not a recommended bibliography, but most of the following comments decided to give up when they saw the book list. If you put these books out, it will be instructive to those who read your articles. I think you are misleading people. Second, I have roughly deduced from the number of references you have made that you may not have a framework for the mathematics of the whole artificial intelligence, otherwise there would not have been such irresponsible recommendations. However, out of respect for you, I did not question your ability. I only gave a brief recommendation in the comments on the suitable math bibliography for beginners.
正是实施严政非常紧要的时候，三大省巡抚这么撂挑子是找死么？他们其实真不是找死，是寻活。
毕业后一个人生活也没有找到固定工作，过着无所事事悠闲自在的日子。
改编权售出去后，陈启并不想参与到这部影片中，他有太多的事要忙。
北宋年间，外族纷纷觊觎大宋国土，形成对立的局面。丐帮帮主乔峰因拒绝副帮主妻康敏之爱遭报复指为契丹人后裔而受尽中原武林人士唾弃。峰力平反遂四出追查身世，期间认识了大理世子段誉及虚竹和尚，并结拜为兄弟。峰追寻身世时屡遭奸人所害，含冤莫白，更错杀红颜知己阿朱，后为救朱妹阿紫寻医至大辽，辗转成为大辽南院大王，但与中原关系则更趋恶劣。誉为人豁达开朗，对貌若天仙的王语嫣一见倾心，可惜嫣只钟情其表哥慕容复，令三人陷入一段纠缠不清的苦恋。竹天性纯良，宅心仁厚，深得高人指点，武功高强，后被选为西夏驸马。峰、誉和竹在汉胡相争的时势下，竟在异域拥有举足轻重的地位，究竟三人会如何了断江湖及感情上的恩恩怨怨。
It is precisely because the seriousness of learning this matter belongs to education in a broad sense that the cost of making content is very high. From the syllabus to the courseware to the final presentation form, many adjustments and corrections need to be made.
