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Bridging mode aims to decouple abstraction and implementation so that the two can change independently. That is to say, the bridging mode further abstracts the implementation details of the original base class into an implemented structure, and then transforms the original base class into an abstract hierarchical structure, thus realizing independent changes of the system in multiple dimensions. The structure diagram of the bridging mode is shown below.　　但年良修还是以巡查为借口来了上海。伊川夏在白天把上司否则，等查明真相后，便是官府不治重罪，本官也饶不了你们。此片由真实故事改编。讲诉一个毒贩被警察抓获，帮警察做任务来减少刑期。因为他的地域优势和才能，反犯罪集团决定任命他为卧底潜入一个威名远扬的摩托帮派——瓦格斯帮（Vagos）。在他潜入的过程中，必须经过一次又一次的伪装和打交道，才能在帮里调查出他们的底细。但在做任务的过程中，同时也在面临着危险....尹旭是有那么一丝不悦，转念一想也就释然了，当初那本就是个荒废的庙宇，当初没有完全破败，正是因为东来居住在那里，时常打理的缘故。Perhaps the moonlight is too bright, disturbing people's sleep. Tony opened it and watched someone help him tuck in his quilt. He evoked his mouth and smiled at Stephen without asking who the man was. Instead, Stephen opened his mouth first, "Doctor, Doctor Strange." Tony looked at the person in front of him through the moonlight and blurted out, "Are you... magician?" The overlapping memory made Stephen blush. Stephen nodded and watched Tony smile like a child. He seemed satisfied and turned his back to pretend to be mysterious and said, "Then we'll see you next time, Tony." He drew a circle with his fingers and opened the portal to meet the sanctuary.After returning home, many students asked "what have you gained from the three rural areas". What I want to say is "some things can only be understood after experiencing them. Some gains are not at the end but in the process". At present, we are still not students who have gone out of school. We always have many lofty ideals and aspirations. Just like me, I am a freshman, and I always think that I can make great efforts in those developed cities after graduation, and my heart is higher than the sky. I don't think there is anything wrong with this. I have always classified this idea as my personal desire for advancement. But after this trip to the countryside, I seem to have realized something different. Everyone is diligent, everyone expects themselves to work in prosperous areas and enjoy high treatment, which is understandable. However, those who know how to repay the society and spread their light in poor areas are extremely noble. "Three Supports and One Help" is a very good policy to enable more college students to have such opportunities to shine.