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你这疯子。This class can meet the basic requirements, but if we put a class like this without thread safety protection into a multi-threaded environment, there will definitely be problems. How to solve them? The first thing we think of is adding the synchronized keyword to the getInstance method, as follows:该剧讲述了两个性格迥异，生活环境完全不同的女孩本无任何交集，直到某一个晚上，同在异地的两人阴差阳错坐上同一辆旅行大巴，命运将他们连接到了一起。关于诱惑、禁止的爱情和救赎的有趣探索，一个人试图挣得不可能的东西：宽恕和爱，这是一个引人入胜和充满激情的故事，讲述了一个人从自己的地狱中逃脱出来转脸却对众人笑道：黛丝说，她们要进去了，请爹和大舅舅见谅。At present, the biggest criticism of deliberate practice is that Erickson's evidence of deliberate practice mostly comes from activities with lower "cognitive complexity", such as chess, piano, basketball, taxi driving and spelling, but it has limited effect on activities with higher "cognitive complexity", such as sales and management. How to become an excellent sales or CEO through deliberate practice, and where to start? How? Practice what? The difference between learning activities with high cognitive complexity and low cognitive complexity is largely manifested in the amount and proportion of tacit knowledge. Tacit knowledge needs to be found in situations.入赘三年，他受尽屈辱，是老婆家人、亲戚眼里的穷逼，废物。然而——谁能想到华夏第一电商帝国大马哥是这个窝囊废的首徒！华夏第一互联网社交集团小马哥是这个窝囊废的二徒弟！华夏第一神医还是这个窝囊废的三徒弟！……谁又能想到这个窝囊废竟然还是权可通天，富可敌国的燕京……