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There are three testers这时候，连张槐和郑氏也不用强撑着了，都流泪不止。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.退休教师齐大妈丧偶多年，她的所有心思全用在外孙女婷婷身上。不料女儿女婿突然离婚，而能歌善舞的外孙女婷婷也因意外失聪。女儿离家出走，女婿再婚，面对种种困境，齐大妈义无反顾肩负起照顾婷婷的重担。婷婷的父亲赢得抚养权，爷爷奶奶也从乡下赶来。齐大妈不舍孩子，只好隐瞒身份以保姆的身份进入前女婿家中。齐大妈忍辱负重一切为了婷婷，没想到却遭到所有人的误解；好不容易以自己的诚心和坚韧赢得了大家的理解，却突然病倒，医生诊断她患上老年痴呆。齐大妈并没有就此倒下，她在剩下有限的时间里帮助婷婷彻底摆脱失聪留下的阴影，同时也帮助婷婷重建与父母和爷爷奶奶的亲情 。她又不肯往上堆，生恐破坏了那花型，只得很不舍地将多余的莲蓬扔进小葱身边的大篮子。