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重点讲解：
1. add up to 总计为；合计达；
For a hit show, profits can add up to millions of dollars.
一场热门演出的利润可达数百万美元。
2. take cover 躲避(炮火、轰炸或坏天气)；
There was no place where we could take cover from the storm.
没有任何地方供我们躲避这场暴风雨。
3. get out of 逃离；被迫离开；
I was going to get out of the building in case it went up.
我怕大楼起火，正打算要跑出去。
4. stay away from 不去,远离(某地)；
Children must be warned to stay away from main roads.
必须警告孩子们远离交通要道。
