Is to create a factory class to create instances of some classes that implement the same interface. First, look at the following diagram:
沈悯芮却本着看热闹不怕事儿大的心态劝道：长帆，我倒觉得可以让先生试试，反正你也没办法不是？嗯……杨长帆托腮道，我个人是不想碰这件事的。
第四季的剧情从尼尔在第三季季终时的逃亡开始。正当FBI总部对尼尔的搜索行动因为一个对尼尔穷追不舍的探员（麦凯·费弗，Mekhi Phifer客串演出）而不断升温之时，彼得也离开了FBI，去寻找尼尔。
}
Punch out
恩仇爱恨，江湖黑白两道的终极对决。正邪之战，侠未必正，盗亦有道，到底孰正孰邪。遭到锦衣卫杀手连环追杀，至使父兄葬身火海，家破人亡。为复仇袁少亡命天涯，机缘巧合下习的无上神通并联合各大门派高手组成同盟，以对抗东厂…… 魏忠贤为了巩固实力，铲除异自勾结塞外第一高手陷害袁少结拜大哥熊廷弼，同时串通努尔哈赤出兵攻打大明，大批杀手冲入北京城，一时间江湖朝野血雨腥风，人人自危，究竟袁少最终如何打开困局？熊廷弼是敌是友，是生是死？大明也陷入了最大的危机……
20世纪初，“孟河医派”传人沈蘅之，博采众家之长学习中医，先在家乡孟河开诊，后到上海行医。他以高尚的医德和精湛的医术，成为沪上名医。1920年，上海流行传染病“烂喉痧”，洋人医院趁机诋毁中医，提高药价，沈蘅之潜心研究出中医疗法，救治了大批贫苦病人，提振了中医声誉。
剧场版
新天眼将主线设定为孩子们在生活中所面临的一些问题，比如说成长、梦想、教育、环保等，整个故事情节十分贴近生活。天眼和好朋友们的一个个生活小故事中展现了许多善良诚实、积极乐观、团结友爱的中华民族优秀品质，让孩子们在观看多彩动画的同时还能汲取一些精神养料。
And they
Um, * * Enhance Sa's "Document Number": Decree No.21 of the Ministry of Labor and Social Security of the People's Republic of China
大苞谷又道：不过爹娘，我可不要那赵家的闺女。
Smoke control and exhaust
Finally, the test:
South Korean advertising model, actor, representative work of South Korean drama "Men in Pattern".
《杀手锏》由畅销小说《血色狼烟》改编而成，融合了家族矛盾、江湖道义、功夫比拼、热血抗日等诸多精彩元素。
高调扬威，孤注一掷，肯定能挣得更大军功，但却要跟何风彻底翻脸。
"The first few hours of the battle were the same as before, We use all kinds of weapons in our hands in our positions. Strike the attacking Vietnamese troops, The exchange of fire was very intense, The front of the position was covered with the bodies of the Vietnamese army. We also have a lot of wounded on our side, However, after all, it is based on strong fortifications. More wounds, less deaths, In particular, the wounded are mainly minor, All of them can continue to fight without getting off the line of fire. At that time, my monitor was quite happy. If you play like this, There's not much pressure to hold position 149, The Vietnamese army that could fight could not even get close 400 meters away from the front of the position, As a result, it was only over an hour after he said this. I remember it was one or two o'clock in the afternoon. Something is wrong, The left and right wings of the position, It's two sparse rain forests, The positive was the same, But before the war, in order to facilitate the offensive forces to assault, All of them have been cut down by Vietnamese troops, But it also broadens our horizons, However, it is still unclear what is going on in the rainforest on both sides. Just when something was wrong, First I heard a "buzzing" sound inside, At first it was a little bit, Later it grew bigger and bigger, At last it was so big that it could almost cover the shot when it was fired. No one in our position knows what's going on, All of them stretched out their heads and looked in the direction of the sound. When the "buzzing" sound reached its peak, they saw that a large area of flying insects flew vertically from the rainforest on both wings. If the number were small, whether the sound or flying insects could not be heard or seen at this distance, but now they could hear clearly.
