The observer mode defines a one-to-many dependency relationship, allowing multiple observer objects to monitor a certain topic object at the same time. When the state of this topic object changes, all observer objects will be notified so that they can automatically update their behaviors. The specific structure diagram is as follows:
主要讲述了在燕赵大地上一支由无数滹沱儿女组成的平山团故事屡立战功的平山团曾被晋察冀军区司令员聂荣臻称赞为太行山上铁的子弟兵！后来，平山团随359旅回防延安在南泥湾，开荒生产、自力更生有力地支援了边区抗战。。。
战场上枪炮的明争与各势力谍报机关之间的暗斗同时展开。国民党老牌谍报人员徐金戈在执行监视日本“笠原商社”的任务过程中，认识了管辖那个区域的巡警方景林。徐金戈对这位与众不同的小警察另眼相看，但他并不知道，方景林的真实身份是潜伏在警局的中共地下党员。虽然身处不同阵营，却冥冥中惺惺相惜，两个为了国家放弃个人选择的男人从此结下不解
8. Plan implementation: It is suggested that the Company hold a meeting to assign tasks and complete indicators to various departments, so as to formulate department plans, implement the headcount, follow up the completion and include the completion in the assessment, so as to effectively achieve the purpose of improving work efficiency.
如今都快把大梁城翻过来了，还是没有消息。
他是恨极了项羽和你，所以你要小心啊。
郑氏看着闺女苦笑：世情如此，她有什么法子。
Use the killing skills inherent in military commanders. Become invincible in the incomparable flurry. Can only be used when the unrivaled scale (yellow scale at the bottom left) is maximum. If you press and hold the button, you can continue to attack until the scale runs out.
兵怂怂一个，将怂怂一窝。
板栗也神情肃穆，没了往日的嬉笑。
汇集民间真实存在的“阴婚”、混乱意识中隐现的“红衣女子”、谁接近谁丧命的“克人”体质等多重惊悚元素，在交织缠绕的情感线中，迸发“取材于现实”的真实恐怖。荒诞离奇、怪事连篇引尖叫，魔鬼“越界”出奇制胜击溃内心防守，阴阳相隔的“跨时代”忠贞爱情惊天地泣鬼神，死神出击、丧命夺魂恐慌“超真实”野蛮生长，山崩地裂式恐怖视听盛宴一触即发！
也不吃肉，把骨头给他啃就成了。
时间慢慢过去，好不容易到了晚上。
EXAMPLE 6
Family name: Fabaceae Leguminosae
Iptables are more complicated and I am not very good at using them. It has certain influence on server performance and cannot prevent large-scale attacks.
2095年10月31日。
沉默之中，大军的脚步越来越近，越来越近，地面的震动也愈发剧烈，每个人心脏的跳动也愈发猛烈。
