重点讲解：
1. clean up
清理，清除；打扫；清扫；把…弄干净；
eg. Nina and Mary were in the kitchen, cleaning up after dinner.
吃过晚饭，尼娜和玛丽在厨房里收拾。
eg. Under pressure from the public, many regional governments cleaned up their beaches.
迫于公众压力，许多地区政府对各自海滩进行了清理。
2. get rid of
扔掉；丢弃；摆脱；甩掉；赶走；
eg. The owner needs to get rid of the car for financial reasons.
因为经济原因，车主必须把汽车处理掉。
eg. He believed that his manager wanted to get rid of him for personal reasons.
他认为经理是出于个人原因想开除他。
