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Polylactic acid (PLA) is a new bio-based and renewable biodegradable material, which is made of starch raw materials proposed by renewable plant resources (such as corn). Starch raw materials are saccharified to obtain glucose, then glucose and certain strains are fermented to produce high purity lactic acid, and polylactic acid with certain molecular weight is synthesized by chemical synthesis method. It has good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after use, and finally generates carbon dioxide and water without polluting the environment, which is very beneficial to environmental protection and is recognized as an environment-friendly material. This thing is actually a long piece, and then "curled up" in it and wrapped in a cylinder shape. What's the use? You will see it in a short time.The life of Li Yu, the Latter Ruler of the Southern Tang Dynasty, was full of legends. He once became an enviable emperor. However, his fate was very difficult. Facing the pressure of soldiers in the Song Dynasty, the small country in the Southern Tang Dynasty was in danger. Just when he was worried, his beloved wife died of illness after a week. Li Yu's life suffered a double blow and was immersed in deep pain. At this time, a frank and lovely young woman broke into his life, making him realize the best love and true feelings in the world at the low point of his life. This woman also became the last heroine in his life, which has been handed down to this day with Li Yu's poems. (Lecture Room 20160309 Poetry Love 6 Teach Your Own Wanton Pity)可是这公孙匡不押解回来，案子难以进展啊。所以，这几人看到陈启到来，才会如此惊讶。笹原完士是名以大学入学做为契机，想要进入那个隐藏的，将漫画、动画、游戏所综合的社团的新生。由于见学时参观访问的“现代视觉文化研究会”＝“现视研”的2年生斑目的策略，笹原完士的自尊心被伤害了。同时，自己也不被认同为是达人。但是，在同人的店铺和当场出售会上等，与高坂和斑目的现视研成员的一同行动中，让笹原完士做好了一切精神准备，下定决心，要朝这个道路前进。再加上一直恋慕着高坂的春日部咲和cosplay的大野等各种人，今天也以现视研为舞台的笹原完士的OTAKU生活，慢慢地展开了。该剧讲述的是拼杀于职场的“剩女”钱多多，由于过了适婚年龄仍未成功出嫁，迫于家人和朋友的压力走上相亲道路。眼看将要升职，上级却派来新的总监许飞，而许飞是曾追求钱多多遭其拒绝的师弟，此次两人再度相遇，不可避免的展开了一场爱情持久战。State machines also have a wide range of uses in game development, especially the logic writing of game AI. The main characters in the game have various states such as walking, attacking, defending, falling and jumping. These states are both interrelated and constrained. For example, if attacked during walking, it will switch from walking state to falling state. In the state of falling, it can neither attack nor defend. Similarly, you cannot switch to the defensive state during the jump, but you can attack. This kind of scenario is very suitable to be described by state machine. The code is as follows: