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1.problem-solving 解决问题
例句：To solve this puzzle, I looked to what had already proved to be an effective practice for problem-solving, RUP.
为了解决这个迷惑，我寻找什么是已经被证实了的RUP里有效解决问题的实践。
2.senior official 高级官员
例句：After a spell in academia and six years at the World Bank, he spent a decade from 1991 as a senior official at the Italian Treasury.
在学术界一段时间后以及后来在世界银行的六年，他花了十年时间，1991年作为一位高级官员在意大利财政部
3.because of 因为
例句：It is mainly because of my fault.
这主要是由于我的过错。
4.angry about 因…生气
例句：So what are you so angry about?
你们这么愤怒是为了什么？
