D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program:
Episode 21
他们怎么得到的船？偷的抢的买的都有可能，谁知道广东最近有没有少一条船。
今年是KinKi Kids出道20周年。为了纪念这一点，意外地在电视剧的最后一集里，说着“20年后，再在这个地方见面吧”而分手的他们，在今年夏天
网络职场微短剧，讲述都市森林里努力生活的Rose小姐在职场中发生的逗趣故事。2分钟泡面番形式密集抛出笑点，贱萌耍宝，折射真实都市白领故事。
他们在森林里彷徨无助地寻找归途，殊不知此时自己已经成为他人的猎物……
在切斯特长大
Physical Attack +18 (Maximum +20)
8-6 City Name: Write a function called city_country () that accepts the name of the city and the country to which it belongs. This function should return a string with a format similar to the following:
但是李莫愁、武三通还是放不下，李莫愁要杀了陆展元弟弟全家，武三通还是疯癫，难以清醒。
无依无靠的青年白鸟龙彦（绫野刚 饰），在鱼龙混杂的新宿和几名小混混发生冲突。关键时刻，他被名叫真虎（伊势谷友介 饰）的男人救下，并接受对方的邀请成为一名星探。然而他这个所谓的“星探”，其实就是站在街头和稍有姿色的女性搭讪，引诱她们走入物欲横流的风尘行业的搜罗者。真虎隶属Burst搜罗者公司，背后有黑帮组织纹舞会撑腰。但是Burst越来越无法满足黑帮的贪婪胃口，随时有被踢走的危险。与之形成最大竞争关系的“闺阁”虎视眈眈，时时刻刻企图抢夺Burst的地盘，其头目南秀吉（山田孝之 饰）似乎对白鸟尤其憎恨。渴望让入行女孩们感到幸福的白鸟，目睹了某个女孩的悲剧，因此无论如何要将小凤（泽尻英龙华 饰）带出地狱。在看不见希望和明天的街道上，男男女女全力奔跑……
80年代金球奖好剧。Jonathan Hart was a self-made millionaire--the CEO of Hart Industries, a global conglomerate. His gorgeous wife Jennifer was a freelance journalist. They were both amateur sleuths, and in every episode found themselves up to their eyeballs in murder, smuggling, theft and international espionage. They also managed to find time to snuggle together, as they loved each other very much. Max was their loyal, gravelly-voiced butler, cook & chauffeur, and Freeway their pet canine. Written by Marty McKee {mmckee@soltec.net}
故事设定在28世纪，人类发现了如何进行时空旅行。Valerian（戴恩·德哈恩 Dane DeHaan 饰）和Laureline（卡拉·迪瓦伊 Cara Delevingne 饰）是“时空服务”的特工，负责保护地球帝国的行星。他们像往常一样执行着星际任务，但在执行一次任务时，他们偶然发现了一个秘密，而他们也被卷入其中，越陷越深……
胡长安大笑一声，领着弟兄们便要跨上弗朗机船只。
樊洪之女 樊梨花 对 薛丁山 一见钟情，不惜和家人反目，献关投薛。 薛丁山 却听信谄言，误以为 樊梨花 是杀父害兄的不义之人，将 樊梨花 赶出唐营。后来在 程咬金 等人的撮合帮助下，上演了“三休三请 樊梨花 ”的动人故事。最终几经离合， 薛丁山 和 樊梨花 终于结为夫妻。在他们的共同努力下，唐军终于平定了 西凉 之乱。
Visitor pattern is suitable for systems with relatively stable data structures. It disconnects the coupling between data structures and operations acting on structures, allowing the set of operations to evolve relatively freely.
等他退回废丘城的时候，偏偏遇上了大雨，结果水淹废丘，让他不得不离开。
