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1、Shake things up：do something different, make a change
2、Megabucks：a large amount of money血本
3、Out with the old, in with the new：旧的不去新的不来
4、Cross that bridge when you come to it：船到桥头自然直
5、A learning curve：a learning process which requires pretty long time and hard work.
6、There's nothing to it：it's really easy
