Factory method pattern refers to defining a factory interface that creates an object. Its subclasses determine the classes to instantiate and postpone the actual creation to the subclasses. It emphasizes the change of "single object". The main points of its implementation include:
2. "Side light" refers to the starboard green light and the port red light, each showing uninterrupted lights in a horizontal arc of 112.5 degrees. Its device shall make the lights display separately from the front of the ship to 22.5 degrees behind the horizontal direction of the respective side. For ships with a length of less than 20m, the broadside lights can be combined into one lamp and installed on the centerline of the head and tail of the ship.
Device
调酒师米罗在重要的一刻遇上了他的真命天女珊妮，于是为彼此安排一场约会。事情一开始都很顺利，但米罗的朋友伦佐出现后，浪漫的约会随即走样，变成一场在午夜柏林躲避黑道的大逃亡
2. How to realize the publish-subscribe mode?
当核装置产生电磁脉冲杀死超过2亿人的电力时，一个十几岁的女孩必须帮助他的家人在一个黑暗的新世界中生存。
明显是姒摇占了便宜，可无诸也是无可奈何，姒摇不可能让自己从东瓯过境。
When the poor finished eating one sheep, the lamb was not born and the days were difficult again, they could not help eating another. The poor thought, "It's not going to work like this. It's better to sell the sheep and buy chickens. The chickens will lay eggs soon. Once the eggs are sold, the days will improve."
开朗、自信的女人。世界上有很多不如美人长得好看的女人，但是她们同样可以遇到帅哥。
该剧由吴恬敏和兰道尔·朴饰一对美国华人夫妻Jessica和Louis，而温明娜将饰Jessica的新好友Elaine，美籍华人，知心姐姐型人物，被称为“中国奥普拉”[笑cry]她幽默聪颖，是Jessica梦寐以求的华人好友形象，她们有很多共同语言。
王突也是王家这一代拔尖的子弟，自幼受诗书熏陶，文采和见识均不凡。
偏生子婴投降了，刘邦却接受了，他个什么东西？有资格接受秦王的投降吗？虎符和传国玉玺也是他可以据有的？一想到这些事情，项羽便满腔怒意。
本剧讲述的是在以时尚和名誉为阶级的一所高中里，在人气金字塔顶端的目中无人的明星白琥瑯 (音译) (郑多彬 饰） 为了寻找揭露自己过去的匿名狙击手，进入完美主义领导放送部部长高恩泽 (音译) (黄旼炫 饰）所在的放送部后展开的相爱相杀的爱情故事。 《Live On（暂定）》是由制作了《十八岁(A-TEEN)》、《恋爱播放列表》等网剧老前辈的PLAYLIST和制作了《Dream High》和《十八岁的瞬间》等大韩民国青春文艺代表Keyeast，以多彩的素材吸引广大观众的电视剧名家JTBC工作室共同企划，在首播前就吸引了众多关注。
The distance between adjacent test points cannot be too close, the minimum distance is 2.54 mm.
小葱便和紫茄招呼胖婶等人上菜。
一个魅力十足的漂亮女孩被许多男人甚至有妇之夫爱慕和追求，但这也似乎为她惹来了麻烦，一个年轻优秀的男子出现在她身边并处处针对她
Marion is a charismatic fifty-year-old French woman who was born with an attention disorder. Rob is a desperate and mysterious thirty-year-old American man. In the wilderness of Canyonlands, Utah, they meet.
如此混乱的局面，也的确牵不出人质了。
沙托以这次交战为契机，本应与李雅哈敌对的，但不知为何却被他看中，并被他纠缠。
How to answer such questions? Consistent Zhihu style, the following various statements have, but the top one is actor Zhang Yi's answer (of course, there are reasons why he is a celebrity), but his answer is as follows:
