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When "cracking" the sand pile paradox, we often have to set a fixed boundary. If we say "10,000 grains of sand are a pile of sand", then less than 10,000 grains of sand cannot be called a pile of sand. Then it is somewhat unreasonable to distinguish 9999 grains of sand from 10001 grains of sand. This has to set a variable boundary, but what is this boundary? We don't know now. Then the value of "10,000 grains of sand are a pile of sand" originally set as knowledge will be reduced.Shutter time: The smaller the shutter time, the faster the photo will be taken. However, due to the fast photo taking speed, the light may not be enough and the picture will appear very dark. 1, 2, 3 That means that the shutter time is 1 second, 2 seconds, 3 seconds, and the photographing time is getting slower and slower, which will make the light of the photo increase sharply, or even explode too much. In fact, long exposure means that the larger the shutter time, the better. It is suitable for photographing night scenes. Remember to use a tripod.According to the provisions of the Criminal Law, intentional injury causing serious injury shall be sentenced to fixed-term imprisonment of not less than three years but not more than 10 years.身边有最好的朋友，才算拥有最棒的人生！患难与共的挚友亚瑟跟凯萨，因著一场阴错阳差的误会，凯萨以为亚瑟得了绝症，想陪好友完成所有人生心愿，活出最疯狂的每一天。两人商议，决定先歇一晚，明天再想法子雇辆车进城。周勃和灌婴靠近了车窗，说道：汉王，曹参快支撑不住了，我们率军前去支援，让亲兵护卫着您先走。